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

Test cross is a cross to know the genotype of the individual. The individual is crossed with recessive parent. The dihybrid test cross ratio is $1:1:1:1$. The characters under consideration are tall white and dwarf black. Gametes of $\mathrm{TtWw}=\mathrm{TW},\mathrm{Tw},\mathrm{tW},\mathrm{tw}$ Gametes of ttww $=\mathrm{tw}$
Thus the ratio of $\mathrm{TtWw}:$ Ttww $:\mathrm{ttWw}:$ ttww is $1:1:1:1$.