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Question about evolution, genetic bottlenecks, and inbreeding

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Author Topic:   Question about evolution, genetic bottlenecks, and inbreeding
lyx2no
Member (Idle past 4745 days)
Posts: 1277
From: A vast, undifferentiated plane.
Joined: 02-28-2008

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Message 3 of 123 (503055)
03-15-2009 6:43 PM 		Reply to: Message 1 by harry
03-15-2009 5:30 PM

A Unwell Researched Opinion
When a species is isolated, goes through a bottle neck, or a small amount of one species is divided from the rest and branches into a new species, what prevents inbreeding having to much of a negative impact to the species survival?
Nothing. The subgroups risk of extinction is inversely proportional to it size, though this is mitigated to some degree by an increase in genetic drift.
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The total research involved in this statement is a memory from something I read rar, rar, rar somewhere, rar, rar dealing with cheetahs, rar, rar
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Welcome, Harry.
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Edited by lyx2no, : Add some rars.
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Genesis 2
17 But of the ponderosa pine, thou shalt not eat of it; for in the day that thou shinniest thereof thou shalt sorely learn of thy nakedness.
18 And we all live happily ever after.
This message is a reply to:
 Message 1 by harry, posted 03-15-2009 5:30 PM harry has replied
Replies to this message:
 Message 4 by harry, posted 03-15-2009 7:04 PM lyx2no has not replied
  
lyx2no
Member (Idle past 4745 days)
Posts: 1277
From: A vast, undifferentiated plane.
Joined: 02-28-2008

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Message 13 of 123 (503069)
03-15-2009 8:27 PM 		Reply to: Message 10 by Rahvin
03-15-2009 8:05 PM

Thank you, Rahvin (and harry)
When harry introduced his second idea there was something uncomfortable in the back of my mind, as if something I intuited was questionable but I couldn't quite put my finger on it. Still you cleared it up; I held harry's idea in my head without even knowing it. Thank you both for shaking it out. It's nice to be rid of a misconception even when you didn't know it was there.
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AbE: harry, are you referring to Y-Adam and Mitochondrial Eve?
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Edited by lyx2no, : No reason given.
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Edited by lyx2no, : Typo in first edit.
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Genesis 2
17 But of the ponderosa pine, thou shalt not eat of it; for in the day that thou shinniest thereof thou shalt sorely learn of thy nakedness.
18 And we all live happily ever after.
This message is a reply to:
 Message 10 by Rahvin, posted 03-15-2009 8:05 PM Rahvin has not replied
  
lyx2no
Member (Idle past 4745 days)
Posts: 1277
From: A vast, undifferentiated plane.
Joined: 02-28-2008

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Message 19 of 123 (503075)
03-15-2009 8:56 PM 		Reply to: Message 18 by harry
03-15-2009 8:51 PM

Yep!
So he our common ancestor, so how come,
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lol...I just got it, this second. wonderful.
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Thankyou very much
Cool, ain't it?
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Genesis 2
17 But of the ponderosa pine, thou shalt not eat of it; for in the day that thou shinniest thereof thou shalt sorely learn of thy nakedness.
18 And we all live happily ever after.
This message is a reply to:
 Message 18 by harry, posted 03-15-2009 8:51 PM harry has replied
Replies to this message:
 Message 20 by harry, posted 03-15-2009 9:08 PM lyx2no has not replied
  
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