Amal has a serious metabolic disorder known as PKU. His sister has the same disorder. Neither of Amal's parents have the disorder. What is the most likely inheritance pattern of this disorder?

Question

Quizplus · Accepted Answer

PKU is an autosomal recessive disorder, meaning that both parents must be carriers of the gene to pass it onto their offspring. The sibling also having the disorder supports this inheritance pattern.

Amal Has a Serious Metabolic Disorder Known as PKU