One type of hereditary mutation that results in a defect in the enzyme hexosaminidase A and causes mental retardation is called
A)albinism.
B)Tay-Sachs disease.
C)phenylketonuria.
D)muscular dystrophy.
E)prions disease.

Question

Quizplus · Accepted Answer

The hereditary mutation that results in a defect in the enzyme hexosaminidase A is associated with Tay-Sachs disease, which causes the accumulation of ganglioside GM2 in the brain and central nervous system leading to mental retardation. Albinism is caused by a defect in melanin production, phenylketonuria is caused by a defect in phenylalanine metabolism, muscular dystrophy is caused by mutations in genes that affect muscle structure and function, and prion diseases are caused by the misfolding of protein prions.

One Type of Hereditary Mutation That Results in a Defect