Question

a genotype where one dominant and one recessive allele was passed on from both parents for one trait.
bb aa tt ll
dad: dominant brown (bb) mom: recessive blue (bb)
child: brown with hidden blue (bb)
homozvgous dominant
homozvgous recessive
allele
heterozygous

Explanation:

1. Analyze each option:

• Homozygous Dominant: Has two dominant alleles (e.g., BB), but the child has Bb, so this is incorrect.
• Homozygous Recessive: Has two recessive alleles (e.g., bb), the child has Bb, so incorrect.
• Allele: Is a variant form of a gene, not a genotype description, so incorrect.
• Heterozygous: Has one dominant and one recessive allele (e.g., Bb), which matches the child's genotype (Bb) and the given definition.

Answer:

D. Heterozygous