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Pronounciation of 
dominant

defined:

A gene that almost always results in a specific physical characteristic, for example, a disease, even though the patient's genome possesses only one copy. With a dominant gene, the chance of passing on the gene (and therefore the disease) to children is 50-50 in each pregnancy.

explained:

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

Dr. Robert Nussbaum, former chief of NHGRI's Genetic Disease Research Branch, defines dominant.

related
terms:

gene, genome



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Talking Glossary en Español

Fact Sheets

All About the Human Genome Project