For more information on becoming a referee and referee courses you can download our information sheet (see âDocumentsâ at the end of this web page). Also, you can contact John Monk (Email: john.monk@amateur-fa.com Tel: 0208 733 2613) who will be pleased to answer any questions you may have about the course.
Genes are made up of DNA. Each chromosome contains many genes. A gene is the basic physical and functional unit of heredity. Genes, which are made up of DNA, act as instructions to make molecules called proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.
There are three known human eye color genes named: EYCL1 (gey), the Green/blue eye color gene, located on chromosome 19. EYCL2 (bey1), the central brown eye color gene, possibly located on chromosome 15. EYCL3 (bey2), the Brown/blue eye color gene located on chromosome 15. A role has also been suggested for the Melanocortin Receptor Gene (MCIR) on chromosome 16. A second gene for green has also been postulated. Other eye colors including black, grey, and hazel are not yet explained.