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Author Topic:   MACROevolution vs MICROevolution - what is it?
Taq
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Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 468 of 908 (817419)
08-17-2017 12:36 PM
Reply to: Message 465 by Faith
08-17-2017 12:02 PM


Re: Evolution has a built-in stopping point
Faith writes:
I feel it necessary to point out that the mutation has to occur in a germ cell because the usual reference to the constantly occurring mutations in every generation don't distinguish between those very very rare occurrences and the huge number of somatic mutations that don't get passed on.
Why do you feel it is necessary to point out something that we all agree to, and have always agreed to?
There are numerous studies demonstrating that humans have about 100 mutations that their parents don't have, and those are germ line mutations. Those are the numbers I keep referring to.

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 Message 465 by Faith, posted 08-17-2017 12:02 PM Faith has not replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 469 of 908 (817420)
08-17-2017 12:38 PM
Reply to: Message 466 by Faith
08-17-2017 12:07 PM


Re: Breeding possibilities
Faith writes:
If you're talking about dogs left to their own devices, since they can all interbreed as far as I know, you don't need mutations at all,
Mutations do occur, though. They need to be part of your model.

This message is a reply to:
 Message 466 by Faith, posted 08-17-2017 12:07 PM Faith has replied

Replies to this message:
 Message 475 by Faith, posted 08-17-2017 1:17 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 472 of 908 (817428)
08-17-2017 1:10 PM
Reply to: Message 470 by Faith
08-17-2017 12:46 PM


Re: Breeding possibilities
Faith writes:
I don't think so, Stile. If some have longer legs AND long hair And different colored eyes you are talking about a different dog altogether, . . .
Are humans with brown eyes an altogether different species than humans with blue eyes?
You seem to be under the impression that increasing genetic diversity contradicts my scenario, but it doesn't.
It does contradict your scenario where evolution must stop when it runs out of genetic diversity. That is what we are arguing against.

This message is a reply to:
 Message 470 by Faith, posted 08-17-2017 12:46 PM Faith has replied

Replies to this message:
 Message 474 by Faith, posted 08-17-2017 1:15 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 476 of 908 (817433)
08-17-2017 1:21 PM
Reply to: Message 475 by Faith
08-17-2017 1:17 PM


Re: Breeding possibilities
Faith writes:
I agree with Percy. Mutations have very little to do with breeding.
Breeding has very little to do with the long term evolution of wild species.

This message is a reply to:
 Message 475 by Faith, posted 08-17-2017 1:17 PM Faith has replied

Replies to this message:
 Message 479 by Faith, posted 08-17-2017 1:31 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 477 of 908 (817436)
08-17-2017 1:22 PM
Reply to: Message 474 by Faith
08-17-2017 1:15 PM


Re: Breeding possibilities
Faith writes:
I'm not talking about humans . . .
Why would it matter what species you are talking about?
. . . but if you isolate a few dozen humans on a desert island for a few hundred years you will get an identifiable race of human beings, possibly with all blue eyes, depends what they started out with.
The human species is not currently an "identifiable species"?
And yes, evolution does run out of genetic diversity . . .
No, it doesn't. Mutations add genetic diversity.
Edited by Taq, : No reason given.

This message is a reply to:
 Message 474 by Faith, posted 08-17-2017 1:15 PM Faith has replied

Replies to this message:
 Message 478 by Faith, posted 08-17-2017 1:27 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 480 of 908 (817440)
08-17-2017 1:32 PM
Reply to: Message 478 by Faith
08-17-2017 1:27 PM


Re: Breeding possibilities
Faith writes:
Mutations do NOT stop selection events from running out of genetic diversity . . .
Yes, they do. Mutations produce new phenotypes which increase genetic diversity.
You could not get a new species or variety or breed or race UNLESS you reduce or lose all the alleles for traits not part of that species or variety or breed or race.
Are you saying that humans are not a species because there are humans with brown eyes and blue eyes? Would one eye color need to replace another before humans can be considered a species?

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 Message 478 by Faith, posted 08-17-2017 1:27 PM Faith has not replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 481 of 908 (817442)
08-17-2017 1:33 PM
Reply to: Message 479 by Faith
08-17-2017 1:31 PM


Re: Breeding possibilities
Faith writes:
Breeding demonstrates how you get a new phenotypic presentation or a new species by losing alleles for other species.
It doesn't demonstrate what happens over longer time periods due to the emergence and fixation of new mutations.
Mutations may slow it down but the development of a new species REQUIRES the loss of alleles for other traits.
It also requires the emergence of new traits through mutations.

This message is a reply to:
 Message 479 by Faith, posted 08-17-2017 1:31 PM Faith has replied

Replies to this message:
 Message 482 by Faith, posted 08-17-2017 1:35 PM Taq has replied
 Message 506 by Faith, posted 08-18-2017 12:21 AM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


(1)
Message 483 of 908 (817460)
08-17-2017 2:41 PM
Reply to: Message 482 by Faith
08-17-2017 1:35 PM


Re: Breeding possibilities
Faith writes:
The only way mutations could be fixed is if they are selected and other alleles drop out, which is a loss of genetic diversity. You aren't getting a species if new traits are emerging.
Are pocket mice not a species because black fur emerged through a mutation? Are peppered moths not a species because they also got black coloration through mutation?
New skin colors, lactose intolerance, and many other traits have emerged in the human species through mutation. Are humans not a species?
Has it ever occurred to you that we don't define a species by the fixation of mutations?
I'm only talking about how you get a species and that requires selection which requires loss of genetic diversity.
You aren't talking about mutations, which increase genetic diversity.
You obviously aren't interested in the arugment, you probably haven't even read half the posts I've made where I explain this, you are just going to go on bleating about mutations whether it makes any sense or not.
Your argument is that evolution will stop because it runs out of genetic diversity. This is contradicted by the emergence of new genetic diversity in the form of mutations. All you can do is ignore the facts.

This message is a reply to:
 Message 482 by Faith, posted 08-17-2017 1:35 PM Faith has replied

Replies to this message:
 Message 484 by Faith, posted 08-17-2017 5:22 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 485 of 908 (817475)
08-17-2017 5:29 PM
Reply to: Message 484 by Faith
08-17-2017 5:22 PM


Re: Breeding possibilities
Faith writes:
You so consistently misread just about e4verything I say it wears me out. Where did I say anything about pocket mice and peppered moths not being species?
Right here:
"You aren't getting a species if new traits are emerging."--Faith
Black fur in pocket mice was the result of new traits emerging. Therefore, by your own argument, pocket mice are not a species. The same applies to peppered moths. The same applies to humans due to the fact that there are many traits that have emerged through mutation.
Evolution does have to stop because it runs out of genetic diversity wherever you are getting new species.
Mutations don't stop when a new species forms. Mutations add genetic diversity.
Edited by Taq, : No reason given.

This message is a reply to:
 Message 484 by Faith, posted 08-17-2017 5:22 PM Faith has replied

Replies to this message:
 Message 486 by Faith, posted 08-17-2017 5:34 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 487 of 908 (817479)
08-17-2017 5:36 PM
Reply to: Message 486 by Faith
08-17-2017 5:34 PM


Re: Breeding possibilities
Faith writes:
I don't know where you got that quote. It's at least out of context and I've said so much that should show I can't possibly mean the mice and the moths are not species that you are being underhanded in your use of it.
You don't get species unless you lose genetic diversity.
And there you said it again. In pocket mice, you have an increase in genetic diversity with the emergence of black fur. Are you saying that pocket mice are not a species?

This message is a reply to:
 Message 486 by Faith, posted 08-17-2017 5:34 PM Faith has replied

Replies to this message:
 Message 488 by Faith, posted 08-17-2017 5:43 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


(1)
Message 489 of 908 (817483)
08-17-2017 5:44 PM
Reply to: Message 488 by Faith
08-17-2017 5:43 PM


Re: Breeding possibilities
Faith writes:
You are failing to see that to get a whole population of black mice requires selection and selection gets rid of all the white mice, which is the reduction in genetic diversity I'm talking about that always has to happen with the formation of a species. Same with the population of white mice, black moths and peppered moths.
If you start with a population of all white mice, then have a population of all black mice, isn't that an equal amount of genetic diversity at the beginning and the end?

This message is a reply to:
 Message 488 by Faith, posted 08-17-2017 5:43 PM Faith has replied

Replies to this message:
 Message 490 by Faith, posted 08-17-2017 5:49 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 491 of 908 (817487)
08-17-2017 5:58 PM
Reply to: Message 490 by Faith
08-17-2017 5:49 PM


Re: Breeding possibilities
Faith writes:
HOW MUCH genetic diversity is NOT the point.
Yes, it is the point. You claimed that evolution will run out of genetic diversity. However, we see that there is the same amount of genetic diversity before evolution and after evolution.

This message is a reply to:
 Message 490 by Faith, posted 08-17-2017 5:49 PM Faith has replied

Replies to this message:
 Message 492 by Faith, posted 08-17-2017 6:08 PM Taq has replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


(1)
Message 493 of 908 (817491)
08-17-2017 6:14 PM
Reply to: Message 492 by Faith
08-17-2017 6:08 PM


Re: Breeding possibilities
Faith writes:
Evolution EVENTUALLY will run out of genetic diversity because selection reduces genetic diversity.
It will never run out of genetic diversity because mutations increase genetic diversity after selection has reduced it.
That is the case with the mice and the moths too.
I just showed you that this is not the case. They started and finished with the same amount of genetic diversity.
You keep misunderstanding what I'm saying but you can't make your misunderstanding the meaning of what I'm saying. The principle I'm talking aobut holds up in all cases.
I understand it just fine. It just happens to be wrong.

This message is a reply to:
 Message 492 by Faith, posted 08-17-2017 6:08 PM Faith has replied

Replies to this message:
 Message 494 by Faith, posted 08-17-2017 6:18 PM Taq has not replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 523 of 908 (817574)
08-18-2017 11:11 AM
Reply to: Message 509 by Faith
08-18-2017 1:03 AM


Re: Breeding possibilities
Faith writes:
Adding diversity does not contribute to the formation of a species.
You are moving the goal posts. You are saying that evolution will run out of genetic diversity. Mutations add genetic diversity. That is what you need to address.

This message is a reply to:
 Message 509 by Faith, posted 08-18-2017 1:03 AM Faith has not replied

  
Taq
Member
Posts: 10085
Joined: 03-06-2009
Member Rating: 5.6


Message 524 of 908 (817575)
08-18-2017 11:13 AM
Reply to: Message 506 by Faith
08-18-2017 12:21 AM


Re: Breeding possibilities
Faith writes:
Not at all, there's plenty of genetic diversity available from which to select for a new species without adding even one mutation. New traits emerge because of changed gene frequencies, not mutations.
We already disproved that claim with the examples of the pocket mice and peppered moth. Both examples involve the emergence of a new trait through mutation.

This message is a reply to:
 Message 506 by Faith, posted 08-18-2017 12:21 AM Faith has not replied

  
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