Question

A homozygous Tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous Dwarf plant (t) bearing white flowers (r):-

(1) Give the Genotype and Phenotype of the F1 generation.
(2) Give the possible combinations of the gametes that can be obtained from the F1 hybrid.
(3) Give the dihybrid ratio and the phenotype of the offsprings of the F2 generation when two plants of the F1 generation above are crossed.

Answer 1

1) phenotype -- tall red 
2)TtRr
3) phenotype ratio--9:3:3:1