Which of the following is the most common genetic disorder in males caused by a change in a gene called FMRI?
A) Fragile X syndrome
B) Down syndrome
C) Tay-Sachs disease
D) PKU

Question

Quizplus · Accepted Answer

Fragile X syndrome is the most common genetic disorder in males caused by a change in the FMR1 gene. Down syndrome is caused by an extra copy of chromosome 21, Tay-Sachs disease is caused by a deficiency in an enzyme called hexosaminidase, and PKU is caused by a deficiency in an enzyme called phenylalanine hydroxylase, none of which involve the FMR1 gene.

Which of the Following Is the Most Common Genetic Disorder