Galactosemia
A)is an X-linked recessive trait expressed more commonly in males.
B)occurs more frequently in some ethnic groups than others.
C)is an autosomal recessive inheritance.
D)must be homozygous to be expressed.
E)is an autosomal recessive inheritance and must be homozygous to be expressed.

Question

Quizplus · Accepted Answer

Galactosemia is an autosomal recessive inheritance, meaning that both copies of the gene must be mutated for the disorder to be expressed. It is not X-linked, as it is caused by a mutation in a gene on chromosome 9, and can occur in individuals of any gender. While the frequency of the disorder may vary between different ethnic groups, it is not exclusively associated with any particular group.