A nurse educating clients in a genetic screening clinic explains that recessive genes on autosomal chromosomes can be passed on
a. to children of either gender.
b. only to males.
c. only to females.
d. to females after skipping a generation.
A
Autosomes are the 22 pairs that are common to males and females. Each child of heterozygous parents who are carriers of an autosomal recessive condition has a 25% chance of inheriting two copies of the mutated gene and therefore being affected, a 50% chance of being a carrier and un-affected, and a 25% chance of neither having the disorder nor being a carrier. These risks are in-dependent of the gender of the child.
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