Fitness and Selection

 

 

 


 






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Convergence, Natural Selection, 'Survival of the Fittest'

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1. Choose one of the examples of convergence from the "Improbable Destinies" Chapter The eyeball of an octopus and the eyeball of humans. 2. Explain what convergent evolution means (perhaps contrasting it with divergent evolution will help). Convergent evolution is when two different species that had evolved separately from two distantly related ancestors share some features, such as fish and whales, even tho the two species have the same structures they are two completely different species.  in contrast divergent evolution is when two species come from the same ancestor. 3. Explain AND illustrate how your choice in #1 is an example of convergent evolution. As it was demonstrated in the reading, even thought the most the recent common ancestor between humans and octopuses existed about 550 million years ago, we both share almost identically structured eyes.  4. Given this week's exploration of natural selection provide ideas of how these two distantly related organi...
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