People who have two copies of the same abnormal autosomal dominant gene will usually be:
a. more severely affected by the disorder than 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.
A
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.
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