What is a test cross ? How does it differs from back cross ?

Explanation

Back Cross. It is.cross which is performed between hybrid and one of its parents. In plani breeding, back cross is performed a few times in order to increase the traits of that parent. Test Cross. It is a back cross between individual with a dominant trait and its recessive parent in order to know whether the individual is homozygous or heterozygous for the trait. The ratio of a test cross will be 100% dominant if the individual to be tested was homozygous dominant. The progency will consist of 50% dominant and 50% recessive for trait. If the individual to be tested is heterozygous i.e., ratio is 1 : 1. In case of dihybrid, the test cross will give a ratio of 1:1:1:1 for heterozygous conditions

est cross is a type of back cross with recessive parent to determine the genotype of the organism