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Question 21.AP.5: The Sun and the Evolution of the Eye BIO The center of sensi...

The Sun and the Evolution of the Eye BIO

The center of sensitivity of our eyes coincides with the center of the wavelength distribution of the Sun. Is this an amazing coincidence?

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This fact is not a coincidence; rather, it’s the result of biological evolution. Humans have evolved with vision most sensitive to wavelengths that are strongest from the Sun. If aliens from another planet ever arrived at Earth, their eyes would have the center of sensitivity at wavelengths different from ours. If their sun were a red dwarf, for example, the alien’s eyes would be most sensitive to red light.

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