Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

dominant




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.


Related category

   • GENETICS AND HEREDITY

Source: National Human Genome Research Institute