Primate Eye Evolution-ScienceNews

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Primate Eye Evolution-ScienceNews

Postby wolfhnd on May 24th, 2009, 8:44 pm 

ScienceDaily (May 24, 2009) — In the developing fetus, cell growth follows a very specific schedule. In the eye's retina, for example, cones -- which help distinguish color during the day -- develop before the more light-sensitive rods -- which are needed for night vision.

But minor differences in the timing of cell proliferation can explain the large differences found in the eyes of two species -- owl monkeys and capuchin monkeys -- that evolved from a common ancestor.

http://www.sciencedaily.com/releases/20 ... 213952.htm
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Credit: Centro Nacional de Primatas, Ananindeua, Brazil
wolfhnd
 


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