Which of the following genetic or chromosomal abnormalities is correctly described

Question

A-In sickle-cell anemia the child receives an extra chromosome during conception and, as a result, develops severe mental disabilities
B-In Down syndrome, the brain tissues of the cortex degenerate, resulting in death
C-In Tay-Sachs disease, the body start producing abnormally shaped red blood cells
D-In phenylketonuria, the body is unable to produced a critical enzyme, which results in an accumulation of persons that causes profound intellectual disabilities

Answer 1

D-In phenylketonuria, the body is unable to produce a critical enzyme, which results in an accumulation of phenylalanine that causes profound intellectual disabilities