| − | A '''Dominant gene''' is a gene that almost always results in a specific physical characteristic, for example, a hereditary disease, even though the patient's genome possesses only one copy. With a dominant gene, the chance of passing on the gene to children is 50-50 in each pregnancy. | + | A '''Dominant gene''' is a gene that almost always results in a specific [[physical]] characteristic, for example, a hereditary [[disease]], even though the patient's [[genome]] possesses only one copy. With a dominant gene, the chance of passing on the gene to children is 50-50 in each pregnancy. |