AP BIOLOGY

Detailed explanation-1: -The masked allele is called recessive and the allele that expresses itself is called dominant. In presence of a dominant allele, the recessive character cannot be expressed i.e., masked. When a recessive allele is present in double dose, only the recessive character is expressed.

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: -In contrast to recessively inherited traits, some alleles are dominant. With a dominant trait, an individual will express the associated phenotype even with just one copy of the allele for the trait.

Detailed explanation-4: -Recessive: In the heterozygous genotype, the expression of one allele is sometimes masked by another. The allele which is masked is said to be recessive.