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Author Topic:   molecular genetic proof against random mutation (1)
derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 164 of 274 (18998)
10-03-2002 12:49 PM
Reply to: Message 160 by peter borger
10-02-2002 8:10 PM


quote:
Originally posted by peter borger:
Dear SLPx,
I referred to Roderick Page, the author of "Molecular Evolution, A Phylogenetic Approach".
Sorry for confusing you. I mentioned that I --before registration to this board-- I had a lot of private conversations with evolutionary biologists. As soon as I mentioned the current problems in evolution theory and demonstrated this with examples from literature, there was silence. So I know what I'm talking about.
Best wishes,
peter

Yes, of course. Because after all, the dogmatic evolutionists are afraid to discuss the falsifications of their pet theory.
I rather believe that when it became clear that you were not really intereste din any rational discourse - as one can see form your TalkOrigins feedback and your posts here - that they decided to stop wasting time on you.

This message is a reply to:
 Message 160 by peter borger, posted 10-02-2002 8:10 PM peter borger has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 165 of 274 (18999)
10-03-2002 12:53 PM
Reply to: Message 159 by peter borger
10-02-2002 8:00 PM


quote:
Originally posted by peter borger:
Dear SLPx,
Yes, Mister SLPx, these postions are NOT under selective constraint and are per definition neutral. I guess, mister Futuyma forgot about this, I don't. Why don't you just simply address my comments in a scientific way and try to convince me, instaed of repeating that I am a creationist. I am always open for good scientific arguments.
best wishes
[This message has been edited by peter borger, 10-02-2002]

Odd - this does not even address what I wrote.
YOU wrote that Kimura claimed this and that, then later admiotted that it was what YOU had in mind.
I simply demonstrated the inconsistency, Mr.Borger.

This message is a reply to:
 Message 159 by peter borger, posted 10-02-2002 8:00 PM peter borger has replied

Replies to this message:
 Message 166 by peter borger, posted 10-03-2002 10:21 PM derwood has replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 169 of 274 (19080)
10-04-2002 1:01 PM
Reply to: Message 166 by peter borger
10-03-2002 10:21 PM


quote:
Originally posted by peter borger:
Dear SLPx,
I guess, Kimura had in mind when he invented the neutral theory all neutral positions in the DNA. In my opinion that includes third 'wobbly' codon position. So I expect to find them to change with a higher rate. What do you expect?
Best wishes,
Peter

I expect scientists to accurately represent their positions and the positions of others.

This message is a reply to:
 Message 166 by peter borger, posted 10-03-2002 10:21 PM peter borger has replied

Replies to this message:
 Message 173 by peter borger, posted 10-06-2002 3:38 AM derwood has replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 170 of 274 (19082)
10-04-2002 2:28 PM
Reply to: Message 162 by peter borger
10-03-2002 3:37 AM


PB:
quote:
You say:
While I see that I was in error in so far as interpreting your post #123 and #126, I maintain that you did not read, or perhaps understand, the implications of the abstracts I posted in #96. One has to be a dogmatist extraordinaire to believe that papers explaining how mutations occurred genome-wide really indicate a non-random mechanism.
I say:
I know the implications, and I just wait and see for more experiments on the 'hot' regions.
And the backtracking continues. You wrote in direct response to my posting of those citations that they were in fact supportive of your fantasy. Now you will 'wait and see.' Common creationist tactic- jumping to totally unwarranted conclusions.
quote:
You say:
I am wrong? Well, then, Peter B., please supply us with the documentation for non-random mutations occurring in multicellular eukaryotes that result in phenotypic change. The best he (Spetner) could do was some pap about sea gull wings... Which of course had no genetic analysis in its support...
Spetner the creationist could not do this then, and he has not done it yet.
Help him out.
I say:
I already helped him out by showing some interesing examples of non-random mutation (although they are not accepted by some evolutionists, including yourself). So, more research in this particular area will be revealing. I predict: Within 10 years non-random mutations will have their place in NDT.
Nothing you have presented even remotely does what you claim it to. Your GLO schtick has been blown out of the water. Nothing else produces an altered phenotype by 'turning on' pre-existing genes (ala NREH). So, you have done nothing at all.
quote:
my quote:
----------------------------------------------------------------------
THAT THE MECHANISM IS NOT EXACTLY AS HE (AND CAIRNS) THOUGHT IT WAS, IS NOT SURPRISING SINCE NOTHING IN BIOLOGY IS AS WE EXPECT IT TO BE.
----------------------------------------------------------------------
So he was wrong then. Good to hear you say that.
I say:
The original proposal was false. I just wait and see what the hot regions imply. Maybe it implies an indirect mechanism.
This is in direct opposition to your earlier proclamations. But it is good to see that you are starting to try to reclaim some integrity.
quote:
my quote:
----------------------------------------------------------------------
FURTHERMORE, THE CAIRNS INTERPRETATION IS ONLY A MINOR POINT IN SPETNER'S BOOK SO YOU CANNOT REJECT HIS ENTIRE BOOK ON CAIRN'S PARTIAL RECANTATION.
----------------------------------------------------------------------
you say:
I didn't. Indeed, the Cairn's bit was mentioned in regards to "non-random mutation" in general, not to anyone's vanity press book targeting a lay audience.
I say:
At least somebody who tries to educate the lay audience in an anti-nihilistic way.
Your metaphysical views of evolution are interesting. Common for creationists to try to 'blame' evolution for this or that, as you are implicitly doing. Irrelevant to science, of course, but interesting. You dislike evolution because of where you think it will lead philosophically or culturally or whatever.
Too friggin bad.
quote:
My objections to the hype are all the extrapolations from it. That is, the BullS..T I hear on the television and read in the papers. You --as a respectable scientist-- should also object to that.
I do object to the terms used by some when talking about evolution. But I wouldn't were it not for the fact that I know how creationists will interpret and twist what they say. When a paleontologist says on TV that "This fossil is one of our ancestors" or something like that, "I" know what he means. But "I" also know how cretins will spin it. That is why I object to scientists saying things like "This fossil is one of our ancestors" .
Of course, I very strongly object to creationists saying thngs like "There is no evidence for evolution" or some such nonsense. And they say it all the time. because they are either totally ignorant or because they are being purposely deceptive.
Which are you?[quote]
quote:
quote:
----------------------------------------------------------------------
BETTER READ HIS BOOK INSTEAD OF ONLY HIS OPPONENTS. AND WHY DO YOU THINK THERE HAVE BEEN CARRIED OUT SO MANY EXPERIMENTS TO FALSIFY CAIRNS INTERPRETATION?
----------------------------------------------------------------------
In reality, so many experiments were carried out to see if he was right (he wasn't), not to try to disprove him.
I say:
Maybe they didn't perform the right experiments yet.
Yes, that must be it. I guess looking at the whole genome beforew and after exposing these critters to strssful environments to see if changes are 'directed' just isn't the right thing to do.
quote:
I think a lot more is going on in this operon than we think there is. And what about the cryptic genes? The distinct stopcodons alternated by sense DNA are nor merely for show. I persist, there is a mechanism that can drain this well, and it will be found. Maybe it cannot be found in the laboratory. Maybe one has to look in subpopulations of extant organisms.
So, proof for creation is just around the corner, right?
quote:
my quote:
----------------------------------------------------------------------
THE NDT WOULD HAVE FALLEN, AND THAT IS EXACTLY WHY YOU OBJECT/DENY THE NON-RANDOMNESS OF MUTATION IN THE 1G5 GENE. AND THAT'S WHY NDT BLOCKS SCIENTIFIC PROGRESS.
----------------------------------------------------------------------
You say:
What progress would be made by accepting a fringe idea on non-random mutation? I object/deny it because as I have repeatedly explained and supplied references for, the idea of non-randomness is not what it is made out to be by folks like you.
I say:
I said this with the 1G5 gene in mind. Denial of observations does not bring science any further.
Indeed. Nor does claiming support from evidence that is in reality contrary to one's position. That is brainwashing, not science.
quote:
You say (about reconsiliation of gene and species trees):
They do? Examples please.
I gave you the IL1-beta incongruence. One should be sufficient.
Oh, right. I forgot - one anomoly can disprove evolution, but several examples countering 'directed mutations' just don't have any effect on alternative 'hypotheses', especially those favored by creationists. Haven't done the right experiments yet, that sort of thing.
quote:
my quote:
----------------------------------------------------------------------
ACCORDING TO EVOLUTIONARY BIOLOGISTS, GENE TREES HAVE TO BE IN AGREEMENT WITH SPECIES TREES.
----------------------------------------------------------------------
you say:
This is a major misrepresentation on your part, Peter B. It is outright false.
I say:
Please elaborate a bit on it. References etc.
Was it not YOU that claimed:
"ACCORDING TO EVOLUTIONARY BIOLOGISTS, GENE TREES HAVE TO BE IN AGREEMENT WITH SPECIES TREES. "
It seems to me that YOU should be the one to provide documentation, since YOU are the one that claims that evolutionary biologists DO believe this. I am an evolutionary biologist (unlike you) and I know this is incorrect. I am the source.
But, you seem to know Futuyma. Maybe you have his text? Well, I do, And it took me all of about 15 seconds to find this:
"Coalescent theory tells us that under some circumstances, this gene tree, even if correct, may not be the same as the species tree, i.e., the phylogeny of the species form which the gene copies were taken."
p. 332, "Evolutionary Biology", 3rd Ed.
Emphases in original. He then goes on for some several paragrapgs explaining why this can be.
Quote-mining and selective interpretations - not to mention baseless assertion - are hallmarks of cretinsm.
quote:
You say:
Your credibility - what little you may have once had here - is now completely gone.
I say:
My credibility within the evolutionary community is about zero, I guess. But, so what, I go for truth, not for 'evolutionisms just-so stories'.
Now its at about - 10. Your 'truth', it seems, is predicated on misinterpretations, personal beliefs, shallow grasps of science, etc.
Common.
quote:
my quote:
----------------------------------------------------------------------
WHY? OTHERWISE ALL GENES LYING OUT PROVIDE FALSIFICATIONS OF COMMON DESCENT.
----------------------------------------------------------------------
you say:
This is just asinine, and indicative of your dogmatic ignorance. Any text on molecular evolution not only explains why discrepencies exist, they actually predict that more will be found.
I say:
Listen Mr SLPx, I don't adhere any dogma's. I just stand up against nihilism.
What bullshit.. You 'stand up' for your creationism beliefs, and that is it.
quote:
And as I see it, molecular genetics points in the direction of 'creatons interacting with matter in a morphogenetic field'. And you have to present pretty strong arguments to convince me of the opposite.
Frankly, I don't care what an asthma researcher thinks about evolution. I don't have to convince you personally of anything, for, as has been shown on this very forum for at least 2 posters that I can easily recall, no matter what is presented, you will simply reject or twist it. That is what the adherents of supernaturalistic antimaterialsims are all about - sophism to protect their beliefs.
quote:
And now I am curious what the hype has invented now to predict discrepancies. So, explain plus references please. (BTW, "to predict discrepancies". Hear what you are implying: 'our hype predicts that phenomenon X may be found and otherwise the opposite of X may also be found.' I call that HUMBUG)
See my Futuyma ref.
In addition, one would thnk that a molecular biologist - even a creationist one - would undestand that not all loci mutate with the same regularity. Though I once encountered a PhD creationist - also from Australia - that claimed to be a geneticist yet didn't know the difference between nucleotides and codons. Creationists like to append polysyllabic words to their titles/credentiasl to impress their target audiene - layfolk.
Funny - when I corrected him, he, likemost cretins, actually engaged in condescension towards me - told me that I should get my "science straight" before daring to correct a PhD geneticist like him....
quote:
my quote:
----------------------------------------------------------------------
YOU CAN FIND THIS HIGHLY DISPUTABLE MATHEMATHICAL TRICK FOR INSTANCE IN 'MOLECULAR EVOLUTION, A PHYLOGENTIC APPROACH by R. PAGE'. WHAT EVO’S DO IS THE OTHER WAY AROUND REASONING. THEY CLAIM THAT SINCE EVOLUTION IS TRUE, THE EVIDENCE FOR PUTATIVE DUPLICATIONS IS SIMPLY THE INCONGRUENCE BETWEEN THE GENE AND THE SPECIES TREE. I OBJECT TO SUCH SIMPLISICISM.
----------------------------------------------------------------------
I object to your idiocy, but it won't get me anywhere. Is it a 'trick'? That sounds awfully inflammatory, Peter B. Perhaps you don't understand statistics?
I say:
No, your are not going to hide behind statistics. That's another trick to not answer. Besides, statistics has nothing to do with putative duplications that are not present.
Refs please. (who do I sound like?)
quote:
you say:
Or maybe the workings of genomes? Well, either way, your claims are getting more and more bizarre and more and more desparate.
I say:
That the claims seem bizarre is due to the shortcomings of evolutionism on the level of the genome.
I see. So everyone else is wrong, and the asthma guy creationist is right.
quote:
my quote:
----------------------------------------------------------------------
FOR EXAMPLES: (http://taxonomy.zoology.gla.ac.uk/rod/papers/page97mpe.pdf).
----------------------------------------------------------------------
The abstract:
"The processes of gene duplication, loss, and lineage sorting can result in incongruence between the phylogenies of genes and those of species. This incongruence complicates the task of inferring the latter from the former. We describe the use of reconciled trees to
reconstruct the history of a gene tree with respect to a species tree. Reconciled trees allow the history of the gene tree to be visualized and also quantify the relationship between the two trees. The cost of a reconciled tree is the total number of duplications and gene losses required to reconcile a gene tree with its species tree.
We describe the use of heuristic searches to find the species tree which yields the reconciled tree with the lowest cost. This method can be used to infer species trees from one or more gene trees."
you say:
Whats your point?
I say:
My point was the incongruence of the IL-1beta family and the absence of the duplication. The only putative duplication to be found in this region is the one that gave rise to human IL-1alpha. Maybe reread my point. And I am not the desperate one.
I think you are - after all, what you see as an evolution disproofing anomoly is actually a fairly well understood phenomenon. Well, understood by those in the field anyway. Like the anti-non-random mutation abstracts I posted, I do have to wonder if you even read the abstact of this paper?
quote:
You say:
I am constantly amazed at how the creationist interprets 'explanations' as 'excuses' and the like. Pitiful, really.
I say:
Better try to convince me with a scientific explanation instead of these evo-blahblah.
Again, I really don't care what megalomaniacs think.
quote:
quote:
I say:
Here you demonstrate again your condescending (dumb and dumber, remember) overconfinced attitude.
----------------------------------------------------------------------
You say:
No, it is a valid conclusion.
I say:
Based on what? Could you please lead me through your thoughts and how you draw such conclusions.
Well, you edited out what I was responding to, and I don't want to open a new window and reread the thread to see. I think it is pretty clear that I was right. Look at the post I am responing to here, for example...
quote:
quote:
---------------------------------
peter borger writes:
THE MOLECULAR GENAEOLGY OF INTERLEUKIN-1-beta demonstrates an aberration from the species tree.
you say:
So?
I say:
Why did you cut of this falsification of common decent. It was the quintessence. Maybe you could respond to it in a scientific way.
LOL! Yeah, it was a falsification. Read the Futuyma ref, for one. Maybe you can support your claims in a scientific way, instead of digging through the lit to find what you consider anomolies which disproof evolution.
quote:
quote:
----------------------------------------------------------------------
And concerning the Uebermensch: you were the one that introduced space-aliens to explain genes in humans not present in apes. I can think of several better 'scientific' non-testable explanations.
----------------------------------------------------------------------
I did no such thing. Please stop misrepresenting me and trying to erect straw man arguments.
MY RESPONSE;
YES, YOU DID. IN RESPONSE TO THE GENES PRESENT IN HUMAN NOT PRSENT IN MAN.
----------------------------------------------------------------------
What genes might be present in humans but not in man, I wonder...
I say:
Obviously, you have a very selective memory. The gene in the LCR16a segment: present in human not in apes.
Gee, Petey - never heard of deletions before? Of course, look at what you wrote:
"...GENES PRESENT IN HUMAN NOT PRSENT IN MAN. "
quote:
You say:
How do you propose this comparison be done?
MY RESPONSE:
AS DEMONSTRATED FOR THE 1G5 GENES IN A LARGE AMOUNT OF SUBPOPULATIONS.
----------------------------------------------------------------------
You say:
What do you mean sub-population?
I say:
Remember the Ig5 gene and the peculiar results that gave when the authors compared subpopulations. That's where my discussion started 3 months ago.
So you can't just say what you mean?
Nature 2000 Dec 7;408(6813):708-13
Mitochondrial genome variation and the origin of modern humans.
Ingman M, Kaessmann H, Paabo S, Gyllensten U.
The analysis of mitochondrial DNA (mtDNA) has been a potent tool in our understanding of human evolution, owing to characteristics such as high copy number, apparent lack of recombination, high substitution rate and maternal mode of inheritance. However, almost all studies of human evolution based on mtDNA sequencing have been confined to the control region, which constitutes less than 7% of the mitochondrial genome. These studies are complicated by the extreme
variation in substitution rate between sites, and the consequence of parallel mutations causing difficulties in the estimation of genetic distance and making phylogenetic inferences questionable. Most comprehensive studies of the human mitochondrial molecule have been carried out through restriction-fragment length polymorphism analysis, providing data that are ill suited to estimations of mutation rate and therefore the timing of evolutionary events. Here, to improve the information obtained from the mitochondrial molecule for studies of human evolution, we describe the global mtDNA diversity in humans based on analyses of the complete mtDNA sequence of 53 humans of diverse origins. Our mtDNA data, in comparison with those of a parallel study of the Xq13.3 region in the same
individuals, provide a concurrent view on human evolution with respect to the age of modern humans.
Subpopulations like this?
quote:
quote:
----------------------------------------------------------------------
I AM INTERESTED IN THE SEQUENCES OF ONE PARTICULARE GENE (SAY HEMOGLOBIN OR CYTOCHROME C) THROUGHOUT THE DIFFERENT HUMAN SUBPOPULATIONS. I WONDER WHETHER THESE DATA ARE PRESENT INLITERATURE?
----------------------------------------------------------------------
You say:
I don't know about that particular gene, but Paabo's group has done an extensive study on the mitochondrial genome and, why, it must be a mere coincidence, the findings fit wquite nicely with evolutionary hypotheses.
I say:
Is this really your response? Could you give me the references of Paabo studies. Was it caried out in subpopulations.
Oh - see above. 53 subpopulations.
quote:
And you write:
"I wonder what your more knowledgible and rational colleagues would think if they knew that you were writing - and apparently believe - something so asinine?"
I say:
Nice try to stop me from doing. My colleagues like new ideas.
Ye, why not publish somewhere that i'm an ass. That would be fun, isn't ist. You could join Schrafinator's club.
It is fun, I agree. But there is no need to publish the obvious
quote:
You say:
I guess you didn't realize that all those duplicated genes actually fit quite well within an evolutionary framework?
I say:
And this shows your lack of knowledge on the topic. Once more for you:
There is NO association between genetic redundancies and gene duplications.
Yes, my lack of knowledge. Maybe you heard of a paper that came out in Science a bit ago. It contained a working draft of 90% of the human genome? It showed that not only have individual genes been duplicated, but in fact much of the genome consists of huge duplicated blocks.
I was talking about duplications, you now add another criterion. Good for you!
quote:
quote:
----------------------------------------------------------------------
(ever heard of the second DNA associated code of transcription? And there may even be a third code involved in coactivation of transcription. Firstly, there is NO evolutionary explanation for the first code. And now we find that the first code gives rise to a second code through possible another code. So you better present a pretty good story to explain this by a random mechanism).
----------------------------------------------------------------------
Frankly, no, I have not heard of this. Please provide some verifiable documentation that I can check to see if your depiction of this is accurate.
MY RESPONSE:
I ALREADY GAVE THE REFERENCES. I AM WAITING FOR A REPONSE.
----------------------------------------------------------------------
You say:
I am still waiting for your hypothesis...
I say:
You could have found it if you actually were reading my posts.
You also say:
A response to what?
I say:
It once more demonstrates your lack of knowledge on contemporary biology. Notably it was published in Science 2001. Everybody reads Science! Except ostriches, I guess.
Yeah, ostiches and arrogant overconfident creationists, I guess.

This message is a reply to:
 Message 162 by peter borger, posted 10-03-2002 3:37 AM peter borger has replied

Replies to this message:
 Message 171 by peter borger, posted 10-05-2002 2:20 AM derwood has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 178 of 274 (19231)
10-07-2002 11:49 AM
Reply to: Message 173 by peter borger
10-06-2002 3:38 AM


quote:
Originally posted by peter borger:
Dear Dr Page,
Why don't you just answer this very simple little question?
Are neutral positions in the DNA expected to change faster over time?
If yes, please explain.
If no, please explain.
Best wishes,
Peter
[This message has been edited by peter borger, 10-06-2002]

Yes, but what does this have to do with what you wrote about Kimura and third codon positions, then backtracking and admitting that it was what YOU had in mind?

This message is a reply to:
 Message 173 by peter borger, posted 10-06-2002 3:38 AM peter borger has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 190 of 274 (19535)
10-10-2002 1:34 PM


Emphases mine:
Mol Biol Evol 1999 Nov;16(11):1633-40
Is selection responsible for the low level of variation in the last intron of the ZFY locus?
Jaruzelska J, Zietkiewicz E, Labuda D.
Institute of Human Genetics, Polish Academy of Sciences, Strzeszynska, Poland.
DNA variability was investigated in the last intron of the Y-chromosome-specific zinc finger gene, ZFY, and its X homolog on Xp21.3, ZFX. No polymorphisms were found in the 676-bp ZFY segment in a sample of 205 world-wide-distributed Y chromosomes, other than a solitary nucleotide variant in one individual (nucleotide diversity pi = 0.0014%). In contrast, 10 segregating sites (pi = 0.082%) were identified within 1,089 bp of the ZFX sequence in a sample of 336 X chromosomes. Four of these polymorphisms, which contributed most of the diversity, were located within an Alu insert disrupting the ZFY-ZFX homology (pi Alu = 0.24%). The diversity in the homologous portion of the ZFX intron, although higher than that in ZFY, was lower than that found in genomic segments believed to evolve neutrally; interspecies divergence in both segments was also reduced. Although this suggests that the evolution of both ZFY and ZFX homologs may not be entirely neutral, both Tajima and HKA tests did not reject neutrality. The lack of statistical significance may be attributed to a lack of power in these tests (the low divergence and variability values reduce the power of the HKA and Tajima tests, respectively); furthermore, Homo sapiens has recently undergone a rapid population growth, and selection is more difficult to detect in an expanding population. Therefore, the failure to reject neutrality does not necessarily indicate the absence of selection. In this context, the phylogenetic argument was given more weight in out interpretations. The high level of sequence identity in ZFY and ZFX segments, in spite of their separation 80-130 MYA, reflects a lower mutation rate as compared with other segments believed to undergo unconstrained evolution. Thus, the possibility of weak selection contributing to the low level of nucleotide diversity in the last ZFY intron cannot be excluded and should be kept in mind in the population genetics studies based on Y chromosome variability.
***************************************************
Mol Cells 2000 Oct 31;10(5):512-8
Evolution of the X-linked zinc finger gene and the Y-linked zinc finger gene in primates.
Kim HS, Takenaka O.
Division of Biological Sciences, College of Natural Sciences, Pusan National University, Korea. khs307@hyowon.cc.pusan.ac.kr
We have sequenced the partial exon of the zinc finger genes (ZFX and ZFY) in 5 hominoids, 2 Old World monkeys, 1 New World monkey, and 1 prosimian. Among these primate species, the percentage similarities of the nucleotide sequence of the ZFX gene were 96-100% and 91.2-99.7% for the ZFY gene. Of 397 sites in the ZFX and ZFY gene sequences, 20 for ZFX gene and 42 for ZFY gene were found to be variable. Substitution causes 1 amino acid change in ZFX, and 5 in ZFY, among 132 amino acids. The numbers of synonymous substitutions per site (Ks) between human and the chimpanzee, gorilla and orangutan for ZFY gene were 0.026, 0.033, and 0.085, respectively. *In contrast, the Ks value between human and hominoid primates for the ZFX gene was 0.008 for each comparison. Comparison of the ZFX and ZFY genes revealed that the synonymous substitution levels were higher in hominoids than in other primates. The rates of synonymous substitution per site per year were higher in the ZFY exon than in the SRY exon, and higher in the ZFY exon than in the ZFY intron, in hominoid primates.
**********************************************************
*Interesting how that mirrors evolutionary hypotheses of descent....
Must be just a coincidence, I'm sure....

Replies to this message:
 Message 191 by peter borger, posted 10-10-2002 9:59 PM derwood has replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 194 of 274 (19638)
10-11-2002 11:31 AM
Reply to: Message 191 by peter borger
10-10-2002 9:59 PM


quote:
Originally posted by peter borger:
dear Dr Page,
I know these articles. Actually, I got a personal copy from Dr Kim. However, the authors do not show the sequences, only the percentages. I was curious whether or not the muations were introduced at random ar not. It didn't show these data.
Furthermore 0.026 and 0.033 is both 0.03. So what's your point w.r.t common descent?
best wishes,
Peter
[This message has been edited by peter borger, 10-10-2002]

The genetic distance reflects the evidence-supported hypotheses of descent.
Should have been obvious.

This message is a reply to:
 Message 191 by peter borger, posted 10-10-2002 9:59 PM peter borger has replied

Replies to this message:
 Message 198 by peter borger, posted 10-13-2002 8:22 PM derwood has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 195 of 274 (19643)
10-11-2002 1:15 PM


see:
http://www2.norwich.edu/spage/zfy1a.htm
It took all of about 15 minutes. There was a nucleotide link at Pubmed, I downloaded the Genbank files, and made an alignment in XESEE.
All common procedures in molecular biology.
Looks pretty random to me - even within species (see Ptr1 and 2, Pan troglodytes).
Of course, the 'non-random' distributions are what we call synapomorphies.

Replies to this message:
 Message 196 by Dr_Tazimus_maximus, posted 10-11-2002 11:07 PM derwood has replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 197 of 274 (19786)
10-13-2002 1:33 PM
Reply to: Message 196 by Dr_Tazimus_maximus
10-11-2002 11:07 PM


quote:
Originally posted by Dr_Tazimus_maximus:
[B][QUOTE]Originally posted by SLPx:
Looks pretty random to me - even within species (see Ptr1 and 2, Pan troglodytes).
Of course, the 'non-random' distributions are what we call synapomorphies.[/B][/QUOTE]
I thought that synapomorphies dealt more with phenotypic traits than genotypic traits.
It seems that the term is ubiquitous. Basically, for those that do no tknow, a synapomorphy is what is also referred to as a 'shared deerived trait' in cladistics. In other words, a trait (in this case, a mutation at a specific locus/site) that is due to common descent.
quote:
Is this a recent use of the term. I have to admit that I am behind on the changes in molecular biology terms as my current work is much more into physical biochem and biochem engineering as they relate to the production and definition of biopharm products than I am into the straight molecular bio. By the way, thanks for the reference earlier.
My pleasure.
I don't know if the term has been 'recently' adopted by molecular ststematists or not - I think rather not, as I have several publications form the 80s that use the term. Perhaps it was limited to 'specialists' until relatively recently?

This message is a reply to:
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derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 199 of 274 (19846)
10-14-2002 9:38 AM


Interesting how science actually tries to solve problems, while pseudoscience tries to use them to support pet beliefs....
J Mol Evol 1994 Dec;39(6):569-78
Contrasting rates of nucleotide substitution in the X-linked and Y-linked zinc finger genes.
Shimmin LC, Chang BH, Li WH.
Human Genetics Center, University of Texas Houston Health Science Center, 77225.
We have sequenced the entire exon (approximately 1.180 bp) encoding the zinc finger domain of the X-linked and Y-linked zinc finger genes (ZFX and ZFY, respectively) in the orangutan, the baboon, the squirrel monkey, and the rat; a total of 9,442 bp were sequenced. The ratio of the rates of synonymous substitution in the ZFY and ZFX genes is estimated to be 2.1 in primates. This is close to the ratio of 2.3 estimated from primate ZFY and ZFX intron sequences and supports the view that the male-to-female ratio of mutation rate in humans in considerably higher than 1 but not extremely large. The ratio of synonymous substitution rates in ZFY and ZFX is estimated to be 1.3 in the rat lineage but 4.2 in the mouse lineage. The former is close to the estimate (1.4) from introns. The much higher ratio in the mouse lineage (not statistically significant) might have arisen from relaxation of selective constraints. The synonymous divergence between mouse and rat ZFX is considerably lower than that between mouse and rat autosomal genes, agreeing with previous observations and providing some evidence for stronger selective constraints on synonymous changes in X-linked genes than in autosomal genes. At the protein level ZFX has been highly conserved in all placental mammals studied while ZFY has been well conserved in primates and foxes but has evolved rapidly in mice and rats, possibly due to relaxation of functional constraints as a result of the development of X-inactivation of ZFX in rodents. The long persistence of the ZFY-ZFX gene pair in mammals provides some insight into the process of degeneration of Y-linked genes.
So, yes, common descent.

Replies to this message:
 Message 200 by peter borger, posted 10-14-2002 9:44 PM derwood has replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 201 of 274 (19939)
10-15-2002 1:57 PM
Reply to: Message 200 by peter borger
10-14-2002 9:44 PM


quote:
Originally posted by peter borger:
So, yes, common descent.
MY RESPONSE:
Ever heard of neutral theory?
Yes, of course I have. I own a collection of Kimura's works and have read his book.
What about it?

This message is a reply to:
 Message 200 by peter borger, posted 10-14-2002 9:44 PM peter borger has replied

Replies to this message:
 Message 202 by peter borger, posted 10-15-2002 7:31 PM derwood has replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 209 of 274 (20170)
10-18-2002 10:56 AM
Reply to: Message 202 by peter borger
10-15-2002 7:31 PM


quote:
Originally posted by peter borger:
Dear Dr Page,
It is hard to make links, isn't it?
In a previous mail you admitted that neutral positions are able to change over time more rapidly than non-neutral position. Kim et al demonstrate that the ZFX region doesn't change at all over 20 million years or so, not even on neutral positions. I find this a bit suspicious. What kind of evolution is this? Non-random evolution? Maybe you can help out?
Best wishes,
Peter

Lets watch out word choice, shall we? I "admitted" nothing - I knew this all along and never said otherwise.
the region Kim et al. analyzed was a little over 300 bp in length. Is it a little odd that no changes occurred? Perhaps. Then, there is no requirement that any changes - neutral or otherwise - should have occurred.
Unless you have some documentable 'rules' that state as much?

This message is a reply to:
 Message 202 by peter borger, posted 10-15-2002 7:31 PM peter borger has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 210 of 274 (20173)
10-18-2002 11:03 AM
Reply to: Message 204 by peter borger
10-16-2002 8:06 PM


quote:
Originally posted by peter borger:
The ZFX gene has about 20% neutral positions on third codon position. No variation in these position during 20 million years simply overturns molecular evolution. Today is just another bad day for evolutionism, I guess.
So Peter B. thinks that evolution is overturned becasue about 80 nucleotides in 'neutral' positions did not exhibit substitution in 20 million years.
Of course, where is Borger's evidence that there were no back mutations?
Not that it matters, really.
No, if there were an intergenic locus of 5kb that showed no change between species in 20 million years, I would be a bit suspicious. But nothing in 300+ bps? Chance alone can probably explain that...
But....
That is about 0.0000025 % of the genome.
I guess we should ignore the fact that most of the remaining 99.9999975% doesn't show anything out of the ordinary (at least according to asthma guy creationist Borger).

This message is a reply to:
 Message 204 by peter borger, posted 10-16-2002 8:06 PM peter borger has replied

Replies to this message:
 Message 212 by peter borger, posted 10-22-2002 12:20 AM derwood has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 211 of 274 (20174)
10-18-2002 11:06 AM
Reply to: Message 206 by peter borger
10-16-2002 10:39 PM


quote:
Originally posted by peter borger:
dear Monkenstick,
There will be a day that YOU have to apologize.
best wishes,
Peter

Because you are RIGHT, right? And all those thousands of others in relevant fields are all just wrong, right?
I have to agree with Monken....

This message is a reply to:
 Message 206 by peter borger, posted 10-16-2002 10:39 PM peter borger has not replied

derwood
Member (Idle past 1906 days)
Posts: 1457
Joined: 12-27-2001


Message 219 of 274 (20495)
10-22-2002 11:02 AM
Reply to: Message 214 by peter borger
10-22-2002 6:17 AM


quote:
Originally posted by peter borger:
I didn't forget about this reference. I read it last weekend and the content of the article simply doesn't rebut my observation that the ZFX gene is completely stable during '20 million' years.
I think I see the problem - Peter B - Do you know the difference between a gene and an exon?
It is an honest question. After all, a PhD-holding creationist once appeared on a discussion board, claiming that his doctorate was in microbiology and genetics, and launched into a diatribe about the human genome having 3 billion codons...

This message is a reply to:
 Message 214 by peter borger, posted 10-22-2002 6:17 AM peter borger has replied

Replies to this message:
 Message 221 by peter borger, posted 10-22-2002 10:23 PM derwood has replied

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