Talk:Convergent evolution

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A start

This used to redirect to homology which is about the opposite of convergent evolution which seemed strange to me. Anyway, its only a start —The preceding unsigned comment was added by Igor nz (talk) May 2007


the process by which two organisms or taxonomic groups share a character

How do organisms share a character via a process? I don't get it. --Ed Poor Talk 09:37, 4 April 2008 (EDT)

Is it clearer now? Philip J. Rayment 09:44, 4 April 2008 (EDT)

Convergence vs Homology

It currently says "In evolutionary biology, convergent evolution is the process by which two organisms or taxonomic groups have a character in common due to independently adapting to a similar environment or niche, not by homology." but then mentions "morphology between bats and birds" Now, while flight is a convergent characteristic between the two (as they did not share a flying common ancestor), their flight limbs are homologous (both forelimbs in the vertebrate body plan)... insect wings are analogous to birds and bats; while they both do the same thing (enable flight by flapping) they are an entirely different structure. So... this should probably be cleaned up. -- Limulus 21:59, 9 February 2011 (EST)

There is a very nice quote on Wikipedia [1] that explains what I'm getting at: "The wings of pterosaurs (1), bats (2) and birds (3) are analogous as wings, but homologous as forearms." -- Limulus 22:04, 9 February 2011 (EST)
BTW, the graphic at that link (skeletal structures of pterosaurs, bats and birds with emphasis on their wings) can be seen as a bit of a refutation of the text "Convergent evolution [...] presents the following conceptual problems. First, it requires that random chance produce the same outcome in at least two independently occurring instances, which is substantially less likely even than doing so once. Such evolutionary coincidence is a less plausble explanation than one that evolutionists assume away, namely, a common Designer." The designs of the arm/hand bones to make the wing are completely different in all three. Also, insect wings are boneless. This does not imply a common designer. -- Limulus 19:05, 10 February 2011 (EST)