AP BIOLOGY

Detailed explanation-1: -When the cross between heterozygous and homozygous white is carried out, the heterozygous one produces two gametes which are (B) and (b) in the same proportion i.e. 50% both. The homozygous white produces only one that is (b). Hence, the correct answer is option (C).

Detailed explanation-2: -In rabbits, black skin (B) is dominant over brown skin (b) and short hair (S) is dominant over long hair (s). If a homozygous black skin, short-haired male is crossed with a homozygous brown skin, long-haired female, all F1 offspring are heterozygous black and short-haired.

Detailed explanation-3: -Brown fur is dominant to white fur in a species of rabbit and is represented with the alleles “B” and “b". What are the resulting percentages of genotypes of a cross between a homozygous dominant parent and a heterozygous parent? Explanation: The answer is 50% BB and 50% Bb, as shown in the punnet square below.

Detailed explanation-4: -In rabbits, black fur is dominant over white fur. Show the cross of a heterozygous black male with a homozygous white female. 2. Tall is dominant over short in pea plants.

Detailed explanation-5: -Thus, the heterozygous individual produces two types of gametes: 50% gametes with “B” and 50% with “b”. The homozygous recessive individual will make all gametes with “b” allele only.