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Convergent Evolution

Discussion of everything related to the Theory of Evolution.

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Convergent Evolution

Postby hamo_05 » Sun May 08, 2005 5:38 pm

For some organisms who have characters that evolved from different ancestral but perform similar or same functions eg wings of bats, birds and insects, i just wondering how this homologica existance in the animal Kingdom would contribute to Darwins theory of evolution. Any thoughts would help. Thanks.
Afele.
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Traditional issues in Biology

Postby mmbell32 » Tue May 10, 2005 4:48 pm

Homologous traits are similar because they are derived from a common ancestor, while analogous traits are similar because natural selection (Darwin) has favored similar adaptations to similar environments.
In the example you gave, wings of bats and birds- also eyes in fish v/s say eyes in octopus or the eyes of crocodiles v/s hippos, the similarity in the traits is due to convergent evolution, not descent from a common ancestor.

Afele, does this make the muddy water clear?
Did it answer your question.
The above post is how i understand the stuff, i could be proven wrong.

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Postby James » Tue May 10, 2005 8:24 pm

Yeh, just because 2 lawyers are both wearing suits, doesn't mean that that one could'nt have come from a farming family and the other didn't. Both species have found the same solution, which gives benefits, for a similar environment.

Another example: http://www.hcc.hawaii.edu/~pine/converge-eg.html
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