Researchers have discovered key insights into the molecular basis of skin color variations among African populations. Their findings broaden the understanding of human evolution and the genetics ...

In other words, a complex variation in skin color has been part of human evolution for a very long time. Another finding is that at least some skin color genes have changed significantly over time.

Human populations feature a broad palette of skin tones. But until now, few genes have been shown to contribute to normal variation in skin color, and these had primarily been discovered through ...

Few human traits are more variable ... that these variants collectively account for 29 percent of the variation in skin color in the three countries studied. That’s a big proportion!

Most of the color in human skin comes from the pigment melanin ... nearly all people with European ancestry have a slightly different variation of the gene — one that has the amino acid ...

Then, they undertook a detailed analysis of the NASA UV data and published measurements of human skin color variations around the world, which had been collected by anthropologists over many decades.

Although all humans have the same number of melanocytes, the amount of melanin they produce differs and gives rise to the variation in human skin color. “To understand what causes different ...

Her research on human adaptations to the environment ... evolved along a spectrum — encompasses so much variation within different skin color "groupings" that it's basically useless, she said ...

Their skin faded as they moved north, because lighter-skinned humans survived Vitamin D deficiency and lived to reproduce. It took many generations to result in the variation of our species.