Albinism Inheritance: Understanding Autosomal Recessiveness

If Laurie has albinism but neither of her parents exhibits this inherited condition, the trait must be autosomal recessive.

For an autosomal recessive trait to be expressed in the offspring, both parents must carry at least one copy of the recessive allele. Since neither of Laurie's parents has albinism, they must both be carriers of the albinism allele, and Laurie must have inherited one copy from each parent.