defined:

A common variation in the sequence of DNA among individuals.

explained:

Listen to a detailed explanation. (Requires the free RealPlayer download)

Dr. Francis Collins, former director of the National Human Genome Research Institute, defines polymorphism.

related
terms:

deoxyribonucleic acid (DNA), genetic code (ATGC)

[ Send this term to a friend ] [ Suggest a term for the glossary ]