Question

A tall round seeded plant (TTRR) is crossed with a dwarf wrinkled seeded plant (ttrr).
(a) Write the genotype and phenotype of F$_1$ plants.
(b) If F$_1$ plants are self-pollinated, write the possible phenotypes in F$_2$.

Hint:

Remember: In a dihybrid cross of the type TtRr $\times$ TtRr, the F$_2$ phenotypic ratio is always 9:3:3:1 if the traits assort independently.

Answer 1