An international team comprised of researchers for the very first time managed to identify 9 genes that are responsible for different colors of the eyebrow. The color of our eyebrow is the most recognizable traits visually for any human. It has a strong relation with the color of the hair. However, the scientists now believe existence of the overlapping & unique genetic composition for both these traits.
Previous studies conducted on the human eyes, skin color, and hair has managed to identify multiple variants of gene. However, no such finding for the eyebrow color has been reported yet. For this new study, the researchers from the countries which include China, Australia, Netherlands, the U.S., and Britain analyzed the samples from 6513 individuals from Europe and graded the same under 4 different categories which includes blond, red, black, and brown.
The researchers found that 8 genes which were previously known as pigmentation genes can actually affect both hair color as well as eyebrow color. The MC1R gene variants are responsible for providing blond color for eyebrow and red color for the hair. However, the C10orrf11 serves as the gene which only affects the colors of the eyebrow.