[Campbell Biology P.330] Based on Figure 14.12, which of the following genotypes will result... | Practice Question

Based on Figure 14.12, which of the following genotypes will result in a yellow Labrador retriever?

  • A: BBEE and BBEe
  • B: bbEE and bbEe
  • C: BBee and Bbee
  • D: Only bbee

Explanation

The text and Figure 14.12 explain that if a Lab is homozygous recessive for the second locus ee , its coat is yellow regardless of the B/b genotype. The Punnett square shows four genotypes resulting in a yellow coat: BBee, Bbee, and bbee two instances . Therefore, any genotype ending in 'ee' produces a yellow lab.