Question

A plant with the genotype TT is called _____.
homozygous
heterozygous
hybrid

Answer 1

Answer: The correct answer for the blank is-

homozygous.

Genotype TT represents the genetic makeup of an organism with respect to one particular trait ( let us consider tall height of pea plant).

Homozygpous genotype is the one that contains same variants ( allele) of a gene whereas heterozygous genotype contains two different alleles ( such as Tt).

In this question, genotype TT contains two T alleles ( which are dominant as represented with capital letter). This genotype which will exhibit dominant trait such as tall height of pea plant.

Answer 2

This would be a homozygotous plant!

Homozygotous refers to the fact that both genes for a certain characteristics are identical. Heterozygotous refers to the fact that the two genes are slightly different. TT means that both genes are the same, so it's homozygotous!