The Evolution of Eyes

(National Geographic) – Ed Yong:

Opsins, lenses, and every other component of the eye are all testament to evolution’s patchwork tinkering. It constantly puts existing materials to new functions, and cobbles simple structures together into complex ones. But evolution has no foresight. Once it has trundled down a particular course, it can’t start from scratch again, so its works are always blighted by imperfections. …

nationalgeographic…2016/02…eyes

Eye evolution

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