Which of the following statements is TRUE regarding phenylketonuria or PKU?
A)PKU can result from several different alleles.
B)PKU is considered a recessive trait.
C)Genetic testing can identify whether potential parents are heterozygous for PKU alleles.
D)With proper screening and treatment, children with PKU can lead relatively normal lives.
E)All of these choices are correct.

Question

Quizplus · Accepted Answer

A) PKU can result from mutations in the PAH gene located on chromosome 12. These mutations can be different.
B) PKU is an autosomal recessive disorder, which means that an individual must inherit two copies of the nonfunctional allele (one from each parent) to develop the disease.
C) Genetic testing can identify carriers of the PKU allele, who have one functional and one nonfunctional copy of the gene.
D) With early screening and treatment, including a strict low-phenylalanine diet, children with PKU can lead relatively normal lives without developing the neurological complications associated with the disease.
Therefore, all of the choices are correct.

Which of the Following Statements Is TRUE Regarding Phenylketonuria or PKU