Question

which describes the notation tt for the trait of plant height?
○ homozygous genotype
○ heterozygous genotype
○ homozygous phenotype
○ heterozygous phenotype

Explanation:

• Genotype vs Phenotype: Genotype refers to the genetic makeup (alleles), while phenotype is the observable trait (like plant height appearance). So "phenotype" options can be eliminated.
• Homozygous vs Heterozygous: Homozygous means having two identical alleles (e.g., TT or tt). Heterozygous means having two different alleles. Since Tt has two different alleles (T and t), it is heterozygous.

Answer:

heterozygous genotype