Punnett square was developed by
Definitions / Explanation : Test cross
Test cross is important to know.
When an individual is having both the alleles of a contrasting character, it is said to be
The important things to remember are that chromosomes as well as genes occur in ...$A$.... The two alleles of a gene pair are located on homologous sites on ...$B$... chromosomes
Choose the correct choice for $A$ and $B$