Answer:
The offspring will be black because they are heterozygous for a dominant trait that is controlled by monogenic inheritance.
Step-by-step explanation:
Guinea pigs will be heterozygous because they inherit a dominant allele that encodes for the black color and a recessive allele associated with the white color. Heterozygosity is a genetic condition associated with the presence of two alleles at a locus which are inherited from both parents, one from the mother and the other from the father