AP BIOLOGY

Detailed explanation-1: -Since each parent has four different combinations of alleles in the gametes, there are sixteen possible combinations for this cross.

Detailed explanation-2: -We inherit half of our genes (alleles) from ma, & the other half from pa, so we end up with two alleles for every trait in our phenotype. An excellent example of multiple allele inheritance is human blood type. Blood type exists as four possible phenotypes: A, B, AB, & O.

Detailed explanation-3: -An example of multiple alleles is coat color in rabbits (Figure 1). Here, four alleles exist for the c gene. The wild-type version, C +C+, is expressed as brown fur.

Detailed explanation-4: -Usually, more versions of a gene means more possible phenotypes. However, three alleles can produce exactly three phenotypes when those alleles are in a dominance series.