To represent a purebred animal, we consider organisms that are homozygous for a trait. This means they have two identical alleles for a specific gene. Therefore, the options that represent purebred status would be:
- TT (homozygous dominant)
- tt (homozygous recessive)
Given your options, the correct answer showing all allele combinations that can represent a purebred animal is:
TT or tt
1 answer