Question

which option shows all allele combinations that can be used to represent a purebred animal? (1 point)

tt

tt

tt or tt

tt or tt

Explanation:

A purebred animal has two of the same alleles. This is called homozygous. For example, if the allele for a trait is represented by \(T\) (dominant) and \(t\) (recessive), \(TT\) (homozygous dominant) and \(tt\) (homozygous recessive) are purebred. \(Tt\) is heterozygous (not purebred).

Answer:

\(TT\) or \(tt\)