Question

PLEASE UPCOMING TEST !!

a brother and sister have the same blood group. however they have different eye colours - the boy has brown and the girl has blue. explain how fertilisation has led to the difference in eye colour.

it also says use the key word gametes, random & chromosomes

Answer 1

The color of the iris just like hair and skin, depends on a protein called melanin and we have specialized cells in our bodies called melanocytes whose job is to go around secreting melanin where it’s needed, including in the iris.