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Question about evolution, genetic bottlenecks, and inbreeding

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Author Topic:   Question about evolution, genetic bottlenecks, and inbreeding
bluescat48
Member (Idle past 4218 days)
Posts: 2347
From: United States
Joined: 10-06-2007

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Message 12 of 123 (503068)
03-15-2009 8:24 PM 		Reply to: Message 11 by harry
03-15-2009 8:09 PM

Re: A Unwell Researched Opinion
No that is wrong, the MRCA is not a species, I know that for sure.
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Unless there is any confusion.
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All humans have a MRCA, we all related through one individual.
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No you are confused. The MRCA is a term for the most recent common ancestor of 2 species no matter how far they are from each other. It is not a single individual but a population. The MRCA between a Homo sapiens & a Homo erectus is different that the MRCA between a homo sapiens and Pan troglodytes, and different than the MRCA between Homo sapiens and Gorilla gorilla. Similarly the MRCA of Pan & Homo has a MRCA with Gorilla. One can back and find a MRCA between Humans & Grasshoppers if one wants to go back that far. In all cases these MRCA's are a species not an individual
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There is no better love between 2 people than mutual respect for each other WT Young, 2002
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Who gave anyone the authority to call me an authority on anything. WT Young, 1969
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Since Evolution is only ~90% correct it should be thrown out and replaced by Creation which has even a lower % of correctness. W T Young, 2008
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 Message 11 by harry, posted 03-15-2009 8:09 PM harry has not replied
  
bluescat48
Member (Idle past 4218 days)
Posts: 2347
From: United States
Joined: 10-06-2007

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Message 55 of 123 (503155)
03-16-2009 2:16 PM 		Reply to: Message 54 by harry
03-16-2009 1:28 PM

Re: Would you Adam and Eve it?
Now all you need to do, is extropolate this to where one son split off to be a chimpanzee, and another split off to become humans.
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If anyone here can draw me a tree disproving that there must have at some point been someone who is the ancestor of all humans. I'll shut up. But I am 99% sure that a Most recent common ancestor is an individual
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One point, the MCRA of both humans & chimps would also be the MRCA to any other chimpoid species (no fossils have been found as of yet) and to the hominid genera, Sahelanthropus, Orrorin, Ardipithrcus, Australopithicus, Parantropus, Kenyanthropus & Homo.
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source: Evolution A Scientific American Reader pg 285 b/Ian Tattersall
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There is no better love between 2 people than mutual respect for each other WT Young, 2002
​
Who gave anyone the authority to call me an authority on anything. WT Young, 1969
​
Since Evolution is only ~90% correct it should be thrown out and replaced by Creation which has even a lower % of correctness. W T Young, 2008
This message is a reply to:
 Message 54 by harry, posted 03-16-2009 1:28 PM harry has replied
Replies to this message:
 Message 56 by harry, posted 03-16-2009 2:19 PM bluescat48 has not replied
  
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