People Share Their Super-Rare Genetic FeaturesBy Tammy Salt / August 30, 2019 3. Heterochromia brightside.me Heterochromia might not be the rarest genetic features, but it’s one of the most beautiful ones. This genetic feature causes people to have different colors of pigmentation in their eyes. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
