![](http://lemur.duke.edu/animals/blueeyed/general.jpg)
The genetics of blue eye color in humans is
almost entirely controlled by a single SNP in a conserved non-coding region in an intron of HERC2, as was strikingly demonstrated in
a recent study on using genetics to predict eye pigmentation.
Humans are not the only primate to have blue eyes--one notable example is the blue-eyed black lemur (pictured on the right). As it's well-known that convergent evolution in pigmentation has occurred in many taxa via similar genetic mechanisms (eg. MC1R), one obvious question is: have similar genetic changes led to blue eyes in humans and other primates? For blue-eyed lemurs, a
new study demonstrates that, well, the answer is no. The authors sequence the region known to be causal for human blue eyes in both blue-eyed black lemurs and a closely-related, non-blue-eyed species, and find no differences.
Though this is a negative result, it's still kind of fun, and establishes a nice example of convergent evolution via separate genetic mechanisms in primates.
Labels: Evolution, Genetics