Briefly describe how the genotypes inside of the punnett squares representing the possible outcomes for an offspring are determined

The Punnett squares are used to determine the possible outcomes of a cross between two individuals. Across and outside the axes of the square, the genotypes of the gametes of these parents are listed. Inside of the square, all the possible combinations between these gametes should be listed. These combinations illustrate all the possible genotypes of the potential offsprings.