What genotype represents heterozygous for a trait with alleles T and t?

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Multiple Choice

What genotype represents heterozygous for a trait with alleles T and t?

Explanation:
Heterozygous means having two different alleles at a gene locus. For alleles labeled T and t, the genotype with one T and one t is Tt. This single dominant T allele paired with a recessive t allele makes the organism heterozygous for that trait. In a simple dominant-recessive system, the dominant T usually masks the recessive t, so Tt expresses the dominant trait just like TT would, while tt would express the recessive trait. So the heterozygous combination for these alleles is Tt.

Heterozygous means having two different alleles at a gene locus. For alleles labeled T and t, the genotype with one T and one t is Tt. This single dominant T allele paired with a recessive t allele makes the organism heterozygous for that trait. In a simple dominant-recessive system, the dominant T usually masks the recessive t, so Tt expresses the dominant trait just like TT would, while tt would express the recessive trait. So the heterozygous combination for these alleles is Tt.

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