Question

Which of the following genotypes are heterozygous?
*
1 point
TT
Tt
tt

Answer 1

The heterozygous genotype is one that has two different alleles for a trait. In your options:

- **TT** is homozygous (both alleles are the same).
- **Tt** is heterozygous (one dominant allele and one recessive allele).
- **tt** is also homozygous (both alleles are the same).

Therefore, the heterozygous genotype from your options is **Tt**.