Question: why does humans have different eye colour? Is it something about family?

David Nunan answered on 16 Nov 2015:

Hi there!

Yes the reason why people have different eye colours is down to the genes (bits of DNA) we have got from our parents. However, it’s not just one gene that holds the information (code) for eye colour, scientists think it could be between 6-16.

Have a look at this website if you like…
http://genetics.thetech.org/online-exhibits/what-color-eyes-will-your-children-have