Which pair of alleles does not represent a Homozygous gene pair?

Bb

bb

BB

Answer:Bb

Explanation:

Homozygous gene pair are pair of allele that are identical e. g BB

Heterozygous gene pair are pair of allele that are not identical e. g Bb

Heterozygous gene pair could show complete dominance where the Allele for dominant will completely mask the effect of the reccessive allele and the individual will express the trait of the dominant allele.

Which pair of alleles does not represent a Homozygous gene pair?

Bb is not an homozygous gene pair as it contain a gene for both dominant and recessive which makes it heterozygous