There isn't a single "skin color gene." Skin color is a complex trait influenced by many genes, and the number of genes involved is constantly being discovered. Recent research suggests that over 150 genes contribute to human skin pigmentation, with several showing signs of positive selection in certain populations.
While some genes like OCA2 are directly related to skin color measurements, others like DCT, MC1R, and ATRN are considered candidate genes for further investigation.
It's important to understand that skin color is not solely determined by genetics; environmental factors like sun exposure also play a role.
