Questions: Which describes the notation Tt for the trait of plant height? homozygous genotype heterozygous genotype homozygous phenotype heterozygous phenotype

The answer is the second one: heterozygous genotype.

Explanation for each option:

• Homozygous genotype: This refers to a genotype where both alleles for a trait are the same, such as TT or tt. Since Tt consists of two different alleles, it is not homozygous.

• Heterozygous genotype: This refers to a genotype where the two alleles for a trait are different, such as Tt. Therefore, Tt is a heterozygous genotype.

• Homozygous phenotype: Phenotype refers to the observable characteristics or traits of an organism, not the genetic makeup. Therefore, Tt cannot be described as a homozygous phenotype.

• Heterozygous phenotype: Similar to the previous point, phenotype refers to the observable traits, not the genetic composition. Tt is a genotype, not a phenotype.

In summary, Tt is a heterozygous genotype because it consists of two different alleles for the trait of plant height.