Definitions for "Autosomal dominant"
Requires that only one affected parent have the trait to pass it to offspring.
A particular type of genetic inheritance. In a dominant inheritance pathway, like in cyclic neutropenia, the child will become a cyclic neutropenia patient if either one of her/his parents pass the affected gene on to their child. The addition 'autosomal' refers to the fact that the inheritance is independent of the child's sex.
A pattern of inheritance caused by a mutation on one allele of an autosomal gene. Only one parent need be affected, and this parent has a one in two chance of passing the disease-causing allele to his or her offspring. Genetic predisposition to breast/ovarian cancer via BRCA1 and BRCA2 (see below) is inherited in the autosomal dominant fashion.