Which of the following represents the expected genotypes of an F₁ generation consisting of 16 individuals from a cross of a true-breeding black (BB) rabbit and a true-breeding white (bb) rabbit? A)16 BB, 0 bb, 0 Bb B)8 BB, 8 bb, 0 Bb C)4 BB, 4 bb, 8 Bb D)0 BB, 0 bb, 16 Bb

Question

Quizplus · Accepted Answer

The first generation (F1) from a cross between true-breeding black (BB) and white (bb) rabbits would all be heterozygous (Bb), as each parent contributes one allele. When these F1 individuals (Bb) are crossed among themselves, the expected genotypic ratio in the F2 generation is 1 BB : 2 Bb : 1 bb. However, the question specifies an F₁ generation, which seems to be a typographical error or a misunderstanding. Assuming the question intends to ask about the F1 generation from the described cross, all offspring would be heterozygous (Bb), as they inherit one B allele from the black rabbit parent and one b allele from the white rabbit parent, resulting in 0 BB, 0 bb, and 16 Bb.

Which of the Following Represents the Expected Genotypes of an F1

Which of the Following Represents the Expected Genotypes of an F₁