________ is a human hereditary disease that is caused by a dominant allele but does not show up in affected individuals until they are in middle age.
A)Cystic fibrosis
B)Sickle cell anemia
C)Tay-Sachs disease
D)Huntington's disease
E)Hemophilia

Question

Quizplus · Accepted Answer

Huntington's disease is an example of a human hereditary disease that is caused by a dominant allele but does not show up in affected individuals until they are in middle age. The disease affects the nervous system and gradually impairs movement, thought processes, and emotion. This delayed onset is due to the fact that the symptoms do not appear until after the individual has already produced children and passed on the dominant allele to them.

________ Is a Human Hereditary Disease That Is Caused by a Dominant