• Question: How come some people have 2 different coloured eyes. Eg one blue one green ?

    Asked by 289genp48 to Remsha, Oliver, Lisa, Fiana on 16 Nov 2018.
    • Photo: Remsha Afzal

      Remsha Afzal answered on 16 Nov 2018:

      Great question! the condition is called heterochromia! Eye color is a polygenic trait which means that multiple genes control its expression in people. Heterochromia is a rare thing to happen but they result from more or less pigmentation in the two eyes due to different expression pattern of genes controlling eye color.