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

To determine the genotype of a tall plant of the F₂generation, Mendel crossed the tall plant from F₂generation with a dwarf plant. He called this a test cross. In a typical test cross an organism (pea plants) showing a dominant phenotype whose genotype is to be determined is crossed with the recessive parent instead of self-crossing. The progenies of such a cross can easily be analysed to predict the genotype of the test organism. Normal test cross ratio for a monohybrid cross is 1:1 and for a dihybrid cross is 1:1:1:1.