how come some people have different colour eyes - Secondary 11

Question: how come some people have different colour eyes
- Keywords:
  colour,
  eye,
  eye colour
Asked by smartypants to Jemma, John, Katie, Lisa, Pete, Jonathan on 4 Jul 2012. This question was also asked by becciholbrook.
- Lisa Fitzgerald answered on 4 Jul 2012:
  
  Hi @smartypants ,
  
  Eye colour is a term used to refer to the pigment of the iris. It changes depending on the levels of melanin in the iris. The amount of melanin in your iris is controlled by a number of individual genes in your DNA and is therefore an inherited trait.
  
  Thanks!
  
  Lisa