The fine-tuning of human color perception

The evolution of trichromatic color vision in humans occurred by first switching from the ability to detect UV light to blue light (between 80-30 MYA) and then by adding green-sensitivity (between 45-30 MYA) to the preexisting red-sensitivity in the vertebrate ancestor. The detailed molecular and functional changes of the human color vision have been revealed by Shozo Yokoyama et al. Emory University and is published in the journal PLOS Genetics.

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