PUNNETT SQUARE FOR DIHYBRID CROSS
This Punnett square illustrates the predicted results of combining each of the gametes in the mating of the parent guinea pigs.

One possible gamete combination is highlighted: male gamete BS; female gamete BS; possible offspring BBSS.

The Punnett square represents all the possible gamete combinations of a mating between the two guinea pigs.

The traits of the offspring can be determined by filling in the Punnett square based on the alleles (in each gamete) that intersect in each of the squares.