Which of these genotypes are heterozygous?

A: TT
B: Tt
C: tt
D: none of these

B

Explanation:

Heterozygous genotypes are those that have one dominant allele and one recessive allele.

Dominant alleles are represented as capital letters, while recessive alleles are represented as lowercase letters. So, a heterozygote should have one capital letter and one lowercase letter.

Looking at the answer choices, only B fits this, so it's the answer.

Hope this helps!

the answer is d. exposing corruption in the church

condensation. good luck!