Punnet square definition

The Punnett square is a square diagram that is used to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach. The diagram is used by biologists to determine the probability of an offspring

A punnet square is a way to figure out an organisms genetics by taking both parents alleles and putting them to each side of the square. When this happens you are able to identify its phenotype ratio