Mysterious Genetic Origins of Blue Eyes in Ancient Humans скачать в хорошем качестве

Mysterious Genetic Origins of Blue Eyes in Ancient Humans

Contrary to most reports, Neandertals did have some variation in genes related to pigmentation. What’s more, Some of that variation has been inherited by modern humans, and different variants are more or less common in different populations. One gene associated with blue eye color arose 250,000 years ago, give or take 100,000 years. Meanwhile, Other genes associated with variation in eye pigmentation arose around 600,000 years ago and 900,000 years ago in the last common ancestor of Neanderthals and modern humans. It is true that many of the DNA variants that make a difference to pigmentation arose recently, and some of those were positively selected. But as it turns out, genes involved in pigmentation have more variants than previously believed, and indeed some of these variants did come into modern human populations from Neandertals. As we will discuss, These gene variants are found in several places in Chromosome 9 and Chromosome 15. SOURCES: https://www.science.org/doi/10.1126/s... https://www.ncbi.nlm.nih.gov/pmc/arti...