Biologists have called five unique features of appearance

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biologists have translated five unique features of human appearance. It is an unusual hair color, different eyes, as well as some other non-standard external characteristics. Provides such a “color” gene MC1R, which makes the production of pheomelanin. Moreover, “reddishness” began to manifest itself in Neanderthals, who inhabited the territory of Europe about 200 thousand years ago. At first, everyone had brown eyes, and then the OCA2 gene provoked a mutation that limits the production of melatonin in the iris, weakening color to blue. Such curls are due to the uneven division of cells in the capillaries found in the hair papilla. In some, such a trait over the years either become less pronounced or disappears altogether. Only 0.6% of the population is heterochromia when the eyes acquire different colors: one is a quad and the other is blue.