Answer:
PpBb, albino
Explanation:
In this case, the pigment gene (P) is present, since the cross is between the homozygous black rate and an albino homozygous for cream. Hence a cross between these two rats would produce offspring with the genotype PpBb, while the phenotype would be that of albino, as long as the criteria If a pigment gene (P) is absent, genes B and b are inoperative is taken into consideration.
