Register | Sign In


Understanding through Discussion


EvC Forum active members: 65 (9164 total)
2 online now:
Newest Member: ChatGPT
Post Volume: Total: 916,905 Year: 4,162/9,624 Month: 1,033/974 Week: 360/286 Day: 3/13 Hour: 1/0


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Hypermacroevolution? Hypermicroevolution
mjfloresta
Member (Idle past 6023 days)
Posts: 277
From: N.Y.
Joined: 06-08-2006


Message 31 of 284 (343621)
08-26-2006 2:13 PM
Reply to: Message 26 by ringo
08-26-2006 2:02 PM


Yes, we can observe the change from "dog-kind" to poodle or Dalmatian in a few hundred years. That's because the difference between a poodle and a Dalmatian is minute.
minute in what sense? genetically? or morphologically? because if genetically, i've looked but I can't find any studies that compare the two breeds genomes...Morphologically, the two breeds display considerable differences (not to mention temperament and traits), certainly more than Darwin's finches which started it all...
The difference between a lion and a housecat is more significant. We don't see people breeding "cat-kind" into lion, tiger, etc. in a few hundred years, do we?
Nor would you expect to.. It is oft-claimed that Creationists misrepresent ToE by saying that man descended from the ape - when in fact ToE claims that both are descended from a common ancestor - both are "descendants" on the tree of life; Same thing here, under this paradigm, domestic cats and lions are both "tips" of a branch - neither one is ancestral to the other nor would you expect to be able to derive one from the other..
The minuteness of the generation-to-generation changes requires many many generations for many variations (i.e. species) to appear. If you try to jam all the changes into a few generations, you are proposing much larger changes than Darwin ever imagined.
Once again, breeding has shown this to be untrue; variations do in fact appear as the result of extremely few generations - i'd have to consult a dog breeder to tell you how few, but certainly within a short period of time..

This message is a reply to:
 Message 26 by ringo, posted 08-26-2006 2:02 PM ringo has replied

Replies to this message:
 Message 34 by ringo, posted 08-26-2006 2:25 PM mjfloresta has replied

  
mjfloresta
Member (Idle past 6023 days)
Posts: 277
From: N.Y.
Joined: 06-08-2006


Message 32 of 284 (343623)
08-26-2006 2:15 PM
Reply to: Message 29 by Faith
08-26-2006 2:08 PM


Re: Cat Kind
The genome is decreased in allelic potentials with each new speciation event. The original cat had enormous potential for the breeding of everything now seen; but today's cats are the end product of the playing out of those potentials, and their potentials, while still apparently large enough to produce new varieties, are greatly reduced from the original.
Exactly

This message is a reply to:
 Message 29 by Faith, posted 08-26-2006 2:08 PM Faith has not replied

  
ringo
Member (Idle past 441 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 33 of 284 (343625)
08-26-2006 2:17 PM
Reply to: Message 28 by Faith
08-26-2006 2:05 PM


Re: Cat Kind
Faith writes:
But at least the original cat kind in Adam's time certainly had the genetic capacity for all known cats to descend from it....
I'm curious: It sounds like you're saying the supposed hyperevolution started in Adam's time and continued through Noah's time, tapering off to almost nothing in the present?
If so, it sounds like an exponential decrease in "potential" rather than a linear one. Wouldn't most of the changes already have occured by Noah's time - i.e. wouldn't there still have been waaaay too many animals to fit on the ark?

Help scientific research in your spare time. No cost. No obligation.
Join the World Community Grid with Team EvC

This message is a reply to:
 Message 28 by Faith, posted 08-26-2006 2:05 PM Faith has replied

Replies to this message:
 Message 35 by Faith, posted 08-26-2006 2:29 PM ringo has replied

  
ringo
Member (Idle past 441 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 34 of 284 (343627)
08-26-2006 2:25 PM
Reply to: Message 31 by mjfloresta
08-26-2006 2:13 PM


mjfloresta writes:
variations do in fact appear as the result of extremely few generations
Once again, the difference between a lion and a housecat is much greater than the difference between a poodle and a Dalmatian. Therefore, many more generations would be required.
If I can walk to the corner store, I can walk to New York - but it is thousands of times farther to New York. Of necessity, my steps must be larger or there must be more of them.
You are proposing that I walk to New York in the same time I can walk to the corner store. Either my legs must move impossibly fast or they must take impossibly large steps.

Help scientific research in your spare time. No cost. No obligation.
Join the World Community Grid with Team EvC

This message is a reply to:
 Message 31 by mjfloresta, posted 08-26-2006 2:13 PM mjfloresta has replied

Replies to this message:
 Message 36 by Faith, posted 08-26-2006 2:33 PM ringo has not replied
 Message 37 by mjfloresta, posted 08-26-2006 2:35 PM ringo has replied

  
Faith 
Suspended Member (Idle past 1474 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 35 of 284 (343629)
08-26-2006 2:29 PM
Reply to: Message 33 by ringo
08-26-2006 2:17 PM


Re: Cat Kind
I'm curious: It sounds like you're saying the supposed hyperevolution started in Adam's time and continued through Noah's time, tapering off to almost nothing in the present?
It isn't even nothing in the present though, except for the cheetah. But none of this is hyper-anything. It is as mjfloresta has been arguing, simply the playing out of the genome; and the model of the rapidity of great change brought about in domestic breeding demonstrates that there needn't be anything but genetics as usual going on, nothing hyper.
If so, it sounds like an exponential decrease in "potential" rather than a linear one. Wouldn't most of the changes already have occured by Noah's time - i.e. wouldn't there still have been waaaay too many animals to fit on the ark?
No, because the genome would still have been huge by comparison with today's. At most I would suppose there might have been two, possibly three cats on the ark. I do think one might have been enough even in Noah's time, however, because of the stupendous original genetic richness. But all this is guesswork. I wouldn't know how to begin to make the necessary calculations.
Edited by Faith, : No reason given.

This message is a reply to:
 Message 33 by ringo, posted 08-26-2006 2:17 PM ringo has replied

Replies to this message:
 Message 38 by ringo, posted 08-26-2006 2:47 PM Faith has replied
 Message 39 by jar, posted 08-26-2006 2:50 PM Faith has not replied
 Message 42 by anglagard, posted 08-26-2006 3:02 PM Faith has replied
 Message 238 by fallacycop, posted 08-28-2006 1:23 PM Faith has replied

  
Faith 
Suspended Member (Idle past 1474 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 36 of 284 (343632)
08-26-2006 2:33 PM
Reply to: Message 34 by ringo
08-26-2006 2:25 PM


Once again, the difference between a lion and a housecat is much greater than the difference between a poodle and a Dalmatian. Therefore, many more generations would be required.
Not if there were a great many allelic possibilities for the different sizes in the original genome. The housecat and the lion are not necessarily from the same branch, as mjf has said. One set of offspring went the housecat direction, another went the lion direction.

This message is a reply to:
 Message 34 by ringo, posted 08-26-2006 2:25 PM ringo has not replied

  
mjfloresta
Member (Idle past 6023 days)
Posts: 277
From: N.Y.
Joined: 06-08-2006


Message 37 of 284 (343634)
08-26-2006 2:35 PM
Reply to: Message 34 by ringo
08-26-2006 2:25 PM


Once again, the difference between a lion and a housecat is much greater than the difference between a poodle and a Dalmatian. Therefore, many more generations would be required.
Once again I'm confused as to your sources. How do you know the difference between a lion and housecat is "much greater" than that between a poodle and Dalmatian? Genetics? Morphology? And if you are right, then I grant you that more generations would be required. But we've already established that intra-special variation (such as seen between dog breeds) does not require many generations at all..
Would common ancestor to lion or common ancestor to house-cat (a descent from perhaps the family level to the species level) require more generations? sure., of course..
But the implication is that such variation could occur in as few as hundreds of generations or less...
If I can walk to the corner store, I can walk to New York - but it is thousands of times farther to New York. Of necessity, my steps must be larger or there must be more of them.
You are proposing that I walk to New York in the same time I can walk to the corner store. Either my legs must move impossibly fast or they must take impossibly large steps.
If you're going to use analogies, I request that they accurately represent what I have said.
I said nothing about the "descent from kind to species" requiring the same amount of time as the "descent of dog breeds among the dog species"...That is your claim..On the contrary, I have repeatedly stated that greater variation would logically require more generations...

This message is a reply to:
 Message 34 by ringo, posted 08-26-2006 2:25 PM ringo has replied

Replies to this message:
 Message 44 by ringo, posted 08-26-2006 3:03 PM mjfloresta has replied
 Message 55 by Archer Opteryx, posted 08-26-2006 3:39 PM mjfloresta has replied

  
ringo
Member (Idle past 441 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 38 of 284 (343641)
08-26-2006 2:47 PM
Reply to: Message 35 by Faith
08-26-2006 2:29 PM


Re: Cat Kind
Faith writes:
the genome would still have been huge by comparison with today's.
You miss my point. Or did I throw it in the wrong direction?
If each "kind" started out with a huge overstuffed genome, the proliferation of species should have been greater before Noah than it was after. I'm guessing at least 80% of the present species would have already existed in Noah's time.

Help scientific research in your spare time. No cost. No obligation.
Join the World Community Grid with Team EvC

This message is a reply to:
 Message 35 by Faith, posted 08-26-2006 2:29 PM Faith has replied

Replies to this message:
 Message 40 by Faith, posted 08-26-2006 2:56 PM ringo has replied

  
jar
Member (Idle past 423 days)
Posts: 34026
From: Texas!!
Joined: 04-20-2004


Message 39 of 284 (343643)
08-26-2006 2:50 PM
Reply to: Message 35 by Faith
08-26-2006 2:29 PM


Re: Cat Kind
No, because the genome would still have been huge by comparison with today's.
And where is the evidence that supports this alleged huge genome?

Aslan is not a Tame Lion

This message is a reply to:
 Message 35 by Faith, posted 08-26-2006 2:29 PM Faith has not replied

Replies to this message:
 Message 97 by Archer Opteryx, posted 08-26-2006 7:10 PM jar has not replied

  
Faith 
Suspended Member (Idle past 1474 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 40 of 284 (343647)
08-26-2006 2:56 PM
Reply to: Message 38 by ringo
08-26-2006 2:47 PM


Re: Cat Kind
If each "kind" started out with a huge overstuffed genome, the proliferation of species should have been greater before Noah than it was after. I'm guessing at least 80% of the present species would have already existed in Noah's time.
OK, there is some confusion here. And I'm going to take back my thought that there might have been more than one cat on the ark. Nope, just one, or that is, two. From which came all cats we know today.
What would have happened is, yes, there would have been many varieties of cats from Adam to Noah, just as there would have been many varieties of everything else, and that would include human beings. Just as humanity was focused through the bottleneck of Noah and his family, losing who knows how many genetic lines that preceded that time, so also the cat kind and all other kinds were focused through the bottleneck of whatever representative was on the ark. That means that many varieties of cat from Adam to Noah were lost to posterity, many alleles for interesting variations lost that is. The happenstance of the preservation of the sabre-toothed tiger demonstrates one direction that enormous variety took.
So, you've worded this wrongly when you say that "at least 80% of the present species would have already existed in Noah's time." It's more like some great percentage of all species existed in Noah's time and a great deal was lost to the lines that came down to the present. I wouldn't take a guess at the percentage myself. However, the genome being so large and all that, alleles for many of the same developments could easily still have been present in the genome of whatever cat type was on the ark. .
Edited by Faith, : Had to change 7 to 2 as cats are unclean animals

This message is a reply to:
 Message 38 by ringo, posted 08-26-2006 2:47 PM ringo has replied

Replies to this message:
 Message 41 by mjfloresta, posted 08-26-2006 2:59 PM Faith has replied
 Message 46 by jar, posted 08-26-2006 3:08 PM Faith has not replied
 Message 47 by ringo, posted 08-26-2006 3:10 PM Faith has replied

  
mjfloresta
Member (Idle past 6023 days)
Posts: 277
From: N.Y.
Joined: 06-08-2006


Message 41 of 284 (343648)
08-26-2006 2:59 PM
Reply to: Message 40 by Faith
08-26-2006 2:56 PM


Re: Cat Kind
That's what I suspect occured as well...

This message is a reply to:
 Message 40 by Faith, posted 08-26-2006 2:56 PM Faith has replied

Replies to this message:
 Message 43 by Faith, posted 08-26-2006 3:02 PM mjfloresta has not replied

  
anglagard
Member (Idle past 866 days)
Posts: 2339
From: Socorro, New Mexico USA
Joined: 03-18-2006


Message 42 of 284 (343649)
08-26-2006 3:02 PM
Reply to: Message 35 by Faith
08-26-2006 2:29 PM


Re: Cat Kind
It is as mjfloresta has been arguing, simply the playing out of the genome; and the model of the rapidity of great change brought about in domestic breeding demonstrates that there needn't be anything but genetics as usual going on, nothing hyper.
Strange such great change, if so normal, has been unobserved in historic times outside of human-induced selective breeding.

This message is a reply to:
 Message 35 by Faith, posted 08-26-2006 2:29 PM Faith has replied

Replies to this message:
 Message 45 by Faith, posted 08-26-2006 3:04 PM anglagard has replied

  
Faith 
Suspended Member (Idle past 1474 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 43 of 284 (343650)
08-26-2006 3:02 PM
Reply to: Message 41 by mjfloresta
08-26-2006 2:59 PM


Re: Cat Kind
I appreciate your arguments and am glad to support them. You have a somewhat different angle than mine, a better grasp of the scientific terminology for sure, but we seem to be working the same territory and two heads are better than one.

This message is a reply to:
 Message 41 by mjfloresta, posted 08-26-2006 2:59 PM mjfloresta has not replied

  
ringo
Member (Idle past 441 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 44 of 284 (343652)
08-26-2006 3:03 PM
Reply to: Message 37 by mjfloresta
08-26-2006 2:35 PM


mjfloresta writes:
How do you know the difference between a lion and housecat is "much greater" than that between a poodle and Dalmatian?
Well, my first clue was that lions and housecats can't interbreed, lions and tigers produce infertile hybrids, etc.
we've already established that intra-special variation (such as seen between dog breeds) does not require many generations at all..
Which is irrelevant, since lions and housecats and tigers are not just different breeds.
Would common ancestor to lion or common ancestor to house-cat (a descent from perhaps the family level to the species level) require more generations? sure., of course..
But the implication is that such variation could occur in as few as hundreds of generations or less...
Again, there is no such "implication" - only your assertion.
I said nothing about the "descent from kind to species" requiring the same amount of time as the "descent of dog breeds among the dog species"...
You didn't have to say it. It's inherent in your argument.
There is only a fixed amount of time available for your scenario - from the time of the flood until the present. Generations do happen at a more-or-less fixed rate for each species. There are only so many generations for your scenario to occur.
Edited by Ringo, : Re-prepositioning.

Help scientific research in your spare time. No cost. No obligation.
Join the World Community Grid with Team EvC

This message is a reply to:
 Message 37 by mjfloresta, posted 08-26-2006 2:35 PM mjfloresta has replied

Replies to this message:
 Message 50 by mjfloresta, posted 08-26-2006 3:24 PM ringo has replied

  
Faith 
Suspended Member (Idle past 1474 days)
Posts: 35298
From: Nevada, USA
Joined: 10-06-2001


Message 45 of 284 (343653)
08-26-2006 3:04 PM
Reply to: Message 42 by anglagard
08-26-2006 3:02 PM


Re: Cat Kind
Strange such great change, if so normal, has been unobserved in historic times outside of human-induced selective breeding.
What sort of evidence would you expect to see? It is only in relatively recent times that naturalists came into being, and for most of the history of the world human beings have been isolated from each other and the animals in their vicinity either deified or mythified or at least not naturalistically described.

This message is a reply to:
 Message 42 by anglagard, posted 08-26-2006 3:02 PM anglagard has replied

Replies to this message:
 Message 48 by anglagard, posted 08-26-2006 3:18 PM Faith has replied
 Message 54 by kuresu, posted 08-26-2006 3:31 PM Faith has not replied

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2023 by EvC Forum, All Rights Reserved

™ Version 4.2
Innovative software from Qwixotic © 2024