Ok, we know that all of the cows and bulls in this scenario are heterozygous. What does that make their genotypes?




Below are two pairs of homologous chromosomes. Choose which represents the cows and the first neighbor's bull and which represents the second neighbor's bull.




You should now have all the information needed to perform a punnett square for each cross of the cows with a bull:





Your punnett square for the cross with the first neighbor's bull should look similar to the one below.

MF mf
MF MMFF MmFf
mf MmFf mmff


The punnett square for the cross with the second neighbor's bull should look similar to this one:

MF mf
Mf MMFf Mmff
mF MmFF mmFf


Now count up how many offspring of each genotype and phenotype you have for each of the two crosses.




Return to the question page and select the correct answers.