Question

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

Explanation:

In genetics, genotype refers to the genetic makeup of an organism. A heterozygous genotype has two different alleles for a gene. Here, 'T' and 't' are different alleles for the plant - height gene. A homozygous genotype would have two identical alleles (TT or tt). Phenotype is the observable characteristic, not the genetic notation.

Answer:

B. heterozygous genotype