• Question: why do people have different coloured eyes?

    Asked by emilyd to Dean, Jess, Luisa on 25 Jun 2010 in Categories: .
    • Photo: Luisa Ostertag

      Luisa Ostertag answered on 24 Jun 2010:

      Because they have differnt versions of genes coding for their eye colour. They have inherited those from their parents.

      About how the different eye colours evolved I am not exactly sure but I think the first humans might all have had brown/ dark eyes and then caused by several mutations green, blue, grey evolved and they probably were an evolutionary advantage as those colours were special and maybe more attractive for mating partners.

      Anyone else any ideas?!?!?

    • Photo: Dean Whittaker

      Dean Whittaker answered on 24 Jun 2010:

      I’ve never thought about this. Good question. I wish I knew.

    • Photo: Jessica Housden

      Jessica Housden answered on 25 Jun 2010:

      It’s genetics and caused by dominant and recessive genes – a very interesting area of science.