Biology - Principles of Inheritance and Variation Question with Solution | TestHub

A pure tall pea plant has the genotype $TT$ and a pure dwarf pea plant has the genotype $tt$.

The cross between them ($TT\times tt$) produces $F_1$ offspring with the genotype $Tt$ (heterozygous tall).

Selfing the $F_1$ generation ($Tt\times Tt$) yields the $F_2$ generation.

The genotypes produced in the $F_2$ generation are $TT$, $Tt$, and $tt$.

Thus, there are $3$ types of genotypes found in the $F_2$ generation.

Answer: 3