A. Autosomal dominant.
B. Autosomal recessive.
C. X-linked dominant.
D. X-linked recessive.
Autosomal dominant is one of several ways that a trait or disorder can be passed down (inherited) through families.
In an autosomal dominant disease, if you inherit the abnormal gene from only one parent, you can get the disease. Often, one of the parents may also have the disease.