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Frequently Asked Questions

GENETICS

Q. What is the Human Genome Project?
A. The Human Genome Project is the mapping of the sequence of chemicals called DNA in all of our genes. All the information collected so far would fill about 200 telephone directories.
 
Q. Why are the eyes of albinos pink?
A. Albinos do not have the coloured pigment in the iris of their eyes, so what we see is the blood vessels at the back of the eye.
 
Q. Is it true that more men are colour-blind than women?
A. There are different forms of colourblindness, and the most common form - red-green colourblindness is more common in men. It is a sex-linked characteristic which means that the colourblind gene is carried on the X chromosome. For men to be born colourblind, they only need one colourblind gene on the X chromosome. For women to be colourblind, they need two colourblind genes on their X chromosomes. An optometrist can test a person for colourblindness.