Class 12 NEET Biology Principles of Inheritance and Variation Questions Part 2

Test cross is performed to determine the genotype of F2 plant. In a typical test cross an organism showing dominant phenotype and whose genotype is to be determined is crossed with one that is homozygous recessive for the allele being investigated, instead of self-crossing. The progenies of such a cross can easily be analysed to predict the genotype of the test organism. Given ahead is an illustration of test cross: