Which option shows all allele combinations that can be used to represent a purebred animal?(1 point) Responses TT or tt TT or tt tt tt Tt Tt TT or Tt
TT or tt.
The option that shows all allele combinations that can be used to represent a purebred animal is "TT or tt."
To determine the allele combinations that can be used to represent a purebred animal, you need to understand the concept of alleles and how they are inherited.
Alleles are alternative forms of a gene that occupy the same position, or locus, on a chromosome. For each gene, an organism inherits two alleles, one from each parent. These alleles can be either the same (homozygous) or different (heterozygous).
In the case of a purebred animal, both alleles for a particular trait are identical, meaning the organism is homozygous. Purebred animals exhibit a specific trait consistently because they have two copies of the same allele.
Let's consider the example of a gene that determines the coat color of rabbits. Suppose we have two alleles, T (representing black coat color) and t (representing white coat color).
The possible allele combinations to represent a purebred animal would be:
- TT: The animal has two copies of the black coat color allele, resulting in a purebred black-coated animal.
- tt: The animal has two copies of the white coat color allele, resulting in a purebred white-coated animal.
So, the correct option that shows all allele combinations that can be used to represent a purebred animal is: TT or tt.