A) A mutation in the PAH gene on chromosome 12 causes PKU.
B) PKU is one of the few genetic conditions that has a treatment.
C) PKU is influenced by both genetics and the environment.
D) PKU is inherited as an autosomal dominant trait.
E) People with PKU cannot convert phenylalanine to tyrosine.

A) the mother's health will be severely impacted with each pregnancy.
B) she is more likely to have a female child.
C) the risk of the child having an X-linked disorder increases.
D) the mother's chromosomes are likely to suffer some damage.
E) the risk of having a child with a chromosomal abnormality increases dramatically.

A) in order to understand developmental disorders.
B) to detect genetic disorders and birth defects in the developing fetus.
C) to identify if an individual will develop a genetic disorder in midlife.
D) to understand patterns of inheritance.
E) to determine if the parents are carriers of disease alleles.