People who have two copies of the same abnormal autosomal dominant gene will usually be
A) More severely affected by the disorder than will people with one copy of the gene
B) Infertile and unable to transmit the gene
C) Carriers of the trait but not affected with the disorder
D) Mildly affected with the disorder

Question

Quizplus · Accepted Answer

Autosomal dominant disorders only require one abnormal gene to be expressed. Thus, individuals with two copies of the same abnormal autosomal dominant gene (homozygous) will have the disorder and be more severely affected than individuals with one copy (heterozygous).

People Who Have Two Copies of the Same Abnormal Autosomal