A newborn has been diagnosed with a disorder that occurs through an autosomal recessive inheritance pattern. The parents ask the nurse, "Which of us passed on the gene that caused the disorder?" The nurse tells them it was:

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In an autosomal recessive inheritance pattern, both parents must carry one copy of the mutated gene and pass it on to their child for the child to express the disorder. Each parent is typically an asymptomatic carrier, meaning they do not show symptoms of the disorder themselves.

A Newborn Has Been Diagnosed with a Disorder That Occurs