Role of a locus control region in the mutually exclusive expression of human red and green cone pigment genes.


Trichromacy in humans and other Old World primates evolved from a dichromatic color vision system approximately 30-40 million years ago. One essential part of this evolution was the duplication and divergence of sequences on the X chromosome to create the present-day red and green cone pigment genes. Earlier work demonstrated that a locus control region… (More)


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