1. Tardigrade
  2. Question
  3. Biology
  4. The ratio in a dihybrid test cross between two individuals is given by

Q. The ratio in a dihybrid test cross between two individuals is given by

 3507  216 AIIMSAIIMS 2001Principles of Inheritance and Variation Report Error

Solution:

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 TtWw = TW, Tw, tW, tw
Gametes of ttww = tw
Thus the ratio of TtWw : Ttww : ttWw : ttww is 1 : 1 : 1 : 1.

Solution Image