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Author Topic:   Evolution Requires Reduction in Genetic Diversity
Taq
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Posts: 10044
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Message 110 of 1034 (691913)
02-26-2013 10:51 AM
Reply to: Message 92 by Bolder-dash
02-25-2013 9:39 PM


Re: The Amazing Pocketmouse!
And then one day one of his brothers turned black. It happened for five different reasons, impacting 80 different genes, but it was just natures messy business of never being able to maintain a stable body plan that works.
Given that both the light colored mice and the dark colored mice are doing fine in nature it would appear that nature can find body plans that work.

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Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 111 of 1034 (691915)
02-26-2013 10:59 AM
Reply to: Message 98 by Faith
02-26-2013 8:39 AM


Re: Mutations Don't Add Anything That Could Rescue the ToE
WHEREVER you get new varieties or phenotypes you get this phenomenon of reducing the genetic diversity . . .
I guess down is up in creationist circles.
You have phenotype A. A mutation occurs. You now have phenotype A and B. You have two phenotypes where you used to have one. You are claiming that going from one phenotype to two is a reduction in genetic diversity? If so, I think you should look up the definition of "reduction".
a point that is where further new phenotypes can't be formed at all, which I'm saying is the end of evolution -- for that line of variation.
Nowhere have you shown that this point exists. Nowhere.
WHEREVER you get new varieties or phenotypes you get this phenomenon of reducing the genetic diversity and what that MEANS is that forming new "species" which one would have thought the ToE was all about, has an end point that must be the definition of the boundary of the Kind or Baramin or whatever you want to call it.
Evidence please.
Presumably what you need is a kind of "increased diversity" that can change the structure of the genome itself . . .
I would assume that you think that humans and chimps are in separate baramins. Can you please show us how their genomes are different structurally. Can you also please show us which differences between humans and chimps can not be produced by the observed processes of mutation. Please show us the mutations you claim can not occur.

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Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 112 of 1034 (691916)
02-26-2013 11:05 AM
Reply to: Message 100 by Faith
02-26-2013 9:16 AM


Re: mutations
New traits are not necessarily brought about by mutation, but can have been latent in the gene pool until some sequence of recombination events brings them to expression.
We also know that new traits do appear through mutation, such as the double muscling of the Belgian Blue bovine breed:
These mutations add to the genetic diversity of any population, not reduce it.
It's selection that makes the difference, and selection, or reproductive isolation/selection, and that's what reduces the genetic diversity, and it does have the last word.
How can selection have the last word when every generation is born with new mutations?
True it's slower but it's the same process of creating a new phenotype by reducing the competing alleles which for that new variety is genetic reduction.
What about creating a new phenotype by mutation?

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Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 117 of 1034 (691942)
02-26-2013 1:41 PM
Reply to: Message 114 by Faith
02-26-2013 12:53 PM


In order to GET corn the plant genome had to lose the genetic atuff that produced maize instead.
It also had to add the genetic stuff that makes corn instead of teosinte. That's what an increase in genetic diversity means as I'm using it.
If you keep breeding for a particular trait you will keep favoring the alleles that produce that trait, maybe for multiple genes even, and the more you favor the more that trait is emphasized. AND at the same time the more you lose the alleles for other kinds of flowers that you DON'T want.
First, you need the traits to select for, and for corn this required an increase in genetic diversity since the ancestral teosinte gene pool did not have the genetic diversity that included the traits found in modern corn.
They also fit very well with my scenario as I'm describing it here, either mutation or built-in genetic diversity supplying the material for selection to work on,
Mutations producing a new phenotype is an increase in genetic diversity.

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 Message 114 by Faith, posted 02-26-2013 12:53 PM Faith has not replied

  
Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(2)
Message 123 of 1034 (691950)
02-26-2013 2:42 PM
Reply to: Message 116 by Faith
02-26-2013 1:21 PM


Re: Plant Breeding
Nope, it always had the genetic capacity to produce corn but that capacity had to be brought out by selection.
That is false. Corn has specific mutations not found in wild teosinte, and these mutations are responsible for some of the corn specific features. For example, mutations in the tga1 gene:
quote:
The most critical step in maize domestication (Zea mays ssp. mays) was the liberation of the kernel from the hardened, protective casing that envelops the kernel in the maize progenitor, teosinte1. This evolutionary step exposed the kernel on the surface of the ear such that it could be readily utilized as a food source by humans. Here, we show that this key event in maize domestication is controlled by a single gene (teosinte glume architecture; tga1) belonging to the SBP-domain family2 of transcriptional regulators. The factor controlling the phenotypic difference between maize and teosinte maps to a 1 kilobase region within which maize and teosinte show only six fixed differences in their DNA sequences. One of these differences encodes a non-conservative amino acid substitution and may affect protein function, while the other five differences potentially affect gene regulation. Molecular evolution analyses show that this region was the target of selection during maize domestication. Our results demonstrate that modest genetic changes in single genes can induce dramatic changes in phenotype during domestication and evolution.
The origin of the naked grains of maize - PMC
These are new mutations producing new phenotypes which is an increase in genetic diversity.
Edited by Taq, : No reason given.

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Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 124 of 1034 (691951)
02-26-2013 2:45 PM
Reply to: Message 121 by Bolder-dash
02-26-2013 2:13 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
How is this a fair comment at all? Where are the bible quotes? If someone questions the viability of evolution, the automatic throwback position is that its a bible argument?
Given the correlation between religious belief and denial of evolution one can hardly be blamed for making the connection. If you actually cited scientific facts instead of using empty assertions perhaps you could avoid these allegations.
Since you can not prove that the problems of reinforcement of harmful genes can be overcome after time, and growth, then really you are just promoting atheism in a science forum.
You have not shown that there is a problem. Again, you need more than empty assertions.

This message is a reply to:
 Message 121 by Bolder-dash, posted 02-26-2013 2:13 PM Bolder-dash has replied

Replies to this message:
 Message 125 by Bolder-dash, posted 02-26-2013 3:15 PM Taq has replied

  
Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 127 of 1034 (691957)
02-26-2013 3:24 PM
Reply to: Message 125 by Bolder-dash
02-26-2013 3:15 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
Given the correlation between belief in evolution and atheism, . . .
False correlation. There are tens of thousands of christian biologists who accept the theory of evolution.
You just said that one can't make assertions without scientific fact to back it, and then you say, "You have not shown that there is a problem."
In other words, YOUR side is allowed to make assertions, and it is up to the opposing side to show there is a problem?
You are the one asserting that there is a problem. It is up to you to support your claims. Where is your evidence?
You haven't shown there is a problem with Faith's ideas.
Yes, I have. I have cited peer reviewed scientific papers to back my claims, such as the mutations found in corn and the mutations found in pocket mice.
Edited by Taq, : No reason given.

This message is a reply to:
 Message 125 by Bolder-dash, posted 02-26-2013 3:15 PM Bolder-dash has replied

Replies to this message:
 Message 128 by Bolder-dash, posted 02-26-2013 3:33 PM Taq has replied

  
Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 129 of 1034 (691960)
02-26-2013 3:35 PM
Reply to: Message 128 by Bolder-dash
02-26-2013 3:33 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
How does a supposed mutation in a pocket mouse refute Faith's claims?
Mutations add genetic diversity, contrary to Faith's claims. That is what the mutations in pocket mice illustrate. At one point, there were just light colored mice. Mutations caused the appearance of a new phenotype. That is an increase in genetic diversity by every measure.
You see, its this kind of deceitful arguments that make your assertions suspect.
Do you know that there are people of all different religious faiths, even atheists who don't believe in Darwinian evolution?
So once again your double standards and deceitful arguments are showing your desire to push an anti-religious agenda.
Do you deny that you have a belief in a creator deity? **the rooster crows**
Edited by Taq, : No reason given.
Edited by Taq, : No reason given.

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Replies to this message:
 Message 130 by Bolder-dash, posted 02-26-2013 3:38 PM Taq has replied
 Message 132 by Bolder-dash, posted 02-26-2013 3:43 PM Taq has replied

  
Taq
Member
Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 131 of 1034 (691963)
02-26-2013 3:42 PM
Reply to: Message 130 by Bolder-dash
02-26-2013 3:38 PM


Re: Taq's religion makes him suspect.
Do you deny you are agnostic/atheist?
Not at all.
Do you deny that you believe in a creator deity? **the rooster crows a second time**

This message is a reply to:
 Message 130 by Bolder-dash, posted 02-26-2013 3:38 PM Bolder-dash has replied

Replies to this message:
 Message 133 by Bolder-dash, posted 02-26-2013 3:48 PM Taq has replied

  
Taq
Member
Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(2)
Message 134 of 1034 (691966)
02-26-2013 3:49 PM
Reply to: Message 132 by Bolder-dash
02-26-2013 3:43 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
Your pocket mice story is not complete until you showed what the pocket mice evolved from.
Already did that in post #78.
Plus you have to account for the other 4 instances where pocket mice showed black fur without that mutation.
How will 4 more examples be more convincing when 1 is not? If those 4 other examples are due to mutations in 4 other genes what then? Just ignore those too?
What if I cite the mutations in humans that are responsible for differences in skin color? What then? Just ignore those too?
But again, you probably only believe the story of the pocket mouse, because you are atheist.
I accept it because of the evidence, something that you don't have for your claims.
Edited by Taq, : No reason given.

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Taq
Member
Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 135 of 1034 (691967)
02-26-2013 3:50 PM
Reply to: Message 133 by Bolder-dash
02-26-2013 3:48 PM


Re: Taq's religion makes him suspect.
I believe that until you can come up with a plausible explanation for how the laws of gravity, the laws of electromagnetism, the laws of the strong and weak nuclear force, and the existence of any law at all coming into being through an unordered, chaos-the existence of desired order is the default position.
How many time will you deny Jesus before the day is over? Three? Peter would be proud.
Until you show how a deity produced the universe the default position is "I don't know".

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 Message 133 by Bolder-dash, posted 02-26-2013 3:48 PM Bolder-dash has not replied

  
Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


Message 139 of 1034 (692035)
02-27-2013 12:41 PM
Reply to: Message 138 by Faith
02-27-2013 12:19 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
Oh that is a TERRIBLE misrepresentation. I've done a lot more than merely assert this, I've walked you through all the reasoning that leads to this conclusion time after time after time.
I have not seen this reasoning. Could you point me to the post in this thread where this reasoning can be found?

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 Message 138 by Faith, posted 02-27-2013 12:19 PM Faith has not replied

  
Taq
Member
Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 144 of 1034 (692070)
02-27-2013 4:23 PM
Reply to: Message 141 by Faith
02-27-2013 1:29 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
Because I interpret the facts from within a different explanatory system.
Thus far, you seem to be making stuff up on the fly without any reference to any facts. That doesn't seem to be a very good explanatory system. You claim that further mutations can not produce a new kind or baramin, but you have yet to show any evidence to back this claim.
Or simply: Because their conclusions are wrong.
Where did you demonstrate that their conclusions were wrong?

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 Message 141 by Faith, posted 02-27-2013 1:29 PM Faith has not replied

  
Taq
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Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 153 of 1034 (692114)
02-27-2013 7:21 PM
Reply to: Message 152 by Faith
02-27-2013 7:14 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
I RECOGNIZED WHAT HAPPENS WHEN A SERIES OF POPULATION REDUCTIONS/ISOLATIONS/SELECTIONS OCCUR AND I REALIZED THE IMPLICATIONS OF THAT FOR THE THEORY OF EVOLUTION.
Why do you ignore what happens when mutations occur and increase genetic diversity?

This message is a reply to:
 Message 152 by Faith, posted 02-27-2013 7:14 PM Faith has replied

Replies to this message:
 Message 155 by Faith, posted 02-27-2013 7:41 PM Taq has replied

  
Taq
Member
Posts: 10044
Joined: 03-06-2009
Member Rating: 5.3


(1)
Message 154 of 1034 (692115)
02-27-2013 7:26 PM
Reply to: Message 149 by Faith
02-27-2013 6:05 PM


Re: Mutations Don't Add Anything That Could Rescue the ToE
What actually happens in reality is that the processes of evolution come to an end by running out of genetic possibilities.
Evidence please.
In REALITY. This is demonstrated in breeding and it is demonstrated all the time in the wild where conservationists are concerned about species endangered by genetic depletion.
This doesn't refute the observation of mutations adding genetic diversity.
You know that there ARE mutations but you don't know what they actually DO in the population.
Yes, we do. They produce increases in genetic and phenotype diversity. Why else do you think humans and chimps look different? They are different because mutations have changed their genomes. The differences are due to mutations.
The other paradigm is that the existing genotype is quite sufficient to provide all the diversity needed for new phenotypes to emerge through many population splits, each new reduction in numbers reducing the genetic diversity until eventually if the splitting keeps continuing you arrive at speciation and inability to further evolve new varieties.
Then show us the combination of chimp genotypes that can produce a human.

This message is a reply to:
 Message 149 by Faith, posted 02-27-2013 6:05 PM Faith has not replied

  
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