Final answer:
A Punnett square is a chart that allows you to determine the expected percentages of different genotypes in the offspring of two parents. It helps in understanding the pattern of inheritance and can be used to determine both genotypic and phenotypic ratios of the offspring.
Step-by-step explanation:
A Punnett square is a chart that allows you to easily determine the expected percentage of different genotypes in the offspring of two parents. It is a tool used to predict the possible outcomes of a genetic cross or mating and their expected frequencies. Each box in the Punnett square represents a possible genotype of the offspring based on the combination of alleles from the parents. The Punnett square helps in understanding the pattern of inheritance and can be used to determine both genotypic and phenotypic ratios of the offspring.