How will you find out whether a given plant is homozygous or heterozygous?
To test whether a plant is homozygous or heterozygous, a test cross is performed in which an individual is crossed with homozygous recessive for the trait. If a plant is heterozygous, the progeny of testcross consists of tall and dwarf plants in the ratio of 1:1. If the plant is homozygous, the progeny of testcross will have all tall plants.
