What is a 'test cross' ? Explain significance of a test cross.

Explanation

The cross between `F_(1)` hybrid and the homo-zygous recessive parent is called test cross. Significance of test cross :
(a) It determines whether individuals exhibiting dominant character are genotypically homozygous or heterozygous.
(b) Purity of the parents can be determined.
(c) It can determine the genotype of the individual.
(d) It has wide application in plant breeding experiments.