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Is Evolution Reversible

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Author Topic:   Is Evolution Reversible
Blue Jay
Member (Idle past 2719 days)
Posts: 2843
From: You couldn't pronounce it with your mouthparts
Joined: 02-04-2008

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Message 17 of 49 (509353)
05-20-2009 6:37 PM 		Reply to: Message 9 by RAZD
05-18-2009 6:30 PM

Hi, RAZD.
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RAZD writes:
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And some of them gained wings (red). And diversified.
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And some of them lost wings (blue again). And diversified.
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And one of those gained wings again (Lapaphus parakensis, below, red again).
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Actually, you've said this backwards: red is wingless and blue is winged.
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So, you've got a wingless common ancestor of walking sticks, several different lineages of walking sticks regaining their wings, and one of those from a winged clade losing its wings again.
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Just a clarification note: the numbers provided at each fork in the tree are bootstrap values. A bootstrap value of 100 means that all simulations run agreed at that point.
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So, there is pretty unequivocal support for the wingless Lopaphus parakensis being derived from within the winged clade.
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Edited by Bluejay, : Added picture link for clarification
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-Bluejay (a.k.a. Mantis, Thylacosmilus)
​
Darwin loves you.
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Blue Jay
Member (Idle past 2719 days)
Posts: 2843
From: You couldn't pronounce it with your mouthparts
Joined: 02-04-2008

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Message 28 of 49 (509970)
05-26-2009 1:13 PM 		Reply to: Message 25 by doc
05-25-2009 5:28 PM

Hi, Doc.
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Doc writes:
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I think it's more probable that the information is not lost and hence in this case evolution can reverse something that was done millions of years ago.
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So, in your mind, what caused the trait to disappear the first time?
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If no information was lost, then what made the walking-sticks' wings stop growing?
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-Bluejay (a.k.a. Mantis, Thylacosmilus)
​
Darwin loves you.
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