A Punnett square provides the following three types of information:
1. Possible combinations: It shows the possible genetic combinations resulting from the mating of two individuals, displaying all possible combinations of alleles from each parent.
2. Genotypic ratio: It provides the ratio of different genotypes (i.e., the different genetic combinations) that can result from the offspring.
3. Phenotypic ratio: It gives the ratio of different phenotypes (i.e., the observable traits) that can result from the offspring.
