A Punnett square can be used to determine possible genotypes of offspring as well as possible genotypic and phenotypic ratios of the offspring given a particular combination of alleles.

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A Punnett square is a tool used in genetics to show the possible combinations of alleles that could result from a cross between two individuals with known genotypes. By examining the square, one can determine the potential genotypes and phenotypes of the offspring, as well as the expected ratios of each.

A Punnett Square Can Be Used to Determine Possible Genotypes