Question

in rabbits, white fur is a recessive trait. based on this fact, what statement best describes this rabbits genotype? a it must have the genotype bb b it is homozygous for fur color c it cannot have the genotype bb d it is heterozygous for fur color

Explanation:

• In genetics, a recessive trait is expressed only when an organism has two copies of the recessive allele (homozygous recessive).
• Let's analyze each option:
• Option A: Genotype \( Bb \) is heterozygous and would express the dominant trait (not white fur if white is recessive).
• Option B: Since white fur is recessive (\( bb \)), the rabbit is homozygous (\( bb \)) for fur color.
• Option C: \( bb \) is the genotype for white fur (recessive), so this is incorrect.
• Option D: Heterozygous (\( Bb \)) would show the dominant trait, not white fur.

Answer:

B. It is homozygous for fur color.