27. in dogs, black fur is dominant to white fur. show a cross between two heterozygous (black-furred) parents using the punnett square below. (it is a chart so you should be able to type in it.) (3 points) black fur allele = b genotype of heterozygous parents: bb white fur allele = b a. what are the possible genotypes of the offspring? b. what are the possible phenotypes of the offspring?