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

People who have two copies of an abnormal gene are usually more severely affected by the disorder because they have no normal gene to maintain normal function.Infertility may or may not be caused by chromosomal defects.A carrier of a trait has one recessive gene.Those mildly affected with the disorder will have only one copy of the abnormal gene.

People Who Have Two Copies of the Same Abnormal Autosomal