By performing genome-wide analyses across hair colors, researchers at the University of Edinburgh, UK, have discovered eight new genetic variants that contribute to red hair. Morgan et al discovered eight new genes linked to red hair. Image credit: Pezibear. Although almost everyone with red hair has two copies of the red-haired version of a gene called MC1R (melanocortin 1 receptor), not everyone carrying two red-haired versions is a redhead. Scientists...
