Biology 1002B Lecture 25: Lecture 25 – Evolution of Color Vision
1 Apr 2016
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Document Summary
Lots of animals have eyes, and they"re very different from each other. Insect eyes are compound (many different eyes together) Irreducible complexity people that are against evolution feel that the eye couldn"t have evolved, because it"s so complex that it can"t be reduced to something that"s more simple. There are organisms that can sense light, but don"t have anything nearly as complex as the eye. These eyes are very different, because over evolutionary time, different tissues have been recruited to make the eye. The ways the eye works are fundamentally different. Insect eyes harvest light differently than human eyes do. This suggests convergent evolution, that organisms have solved the problem of how to sense the environment using many different routes. There"s lots of evidence that the eye has evolved ~40 different times over evolutionary time. Eyes do not share a common ancestor, they"ve simply converged to somehow look the same (through convergent evolution)
