AP BIOLOGY

Detailed explanation-1: -Since one “normal” copy of the gene can often provide enough of the protein to mask the effects of the disease allele, these disorders often have a recessive inheritance pattern.

Detailed explanation-2: -The effect of the other allele (the recessive allele) is masked by the dominant allele. Typically, an individual who carries two copies of a dominant allele exhibits the same trait as those who carry only one copy. This contrasts to a recessive trait, which requires that both alleles be present to express the trait.

Detailed explanation-3: -Answer and Explanation: A dominant allele would be able to mask the expression of a recessive allele.