Answer:
Genotype of offspring: bb
Phenotype of offspring: white
Percentage of white offspring: 100%
Percentage of black offspring: 0%
Step-by-step explanation:
Black with allele B is dominant to white with allele b.
Homozygous white will have the genotype bb.
Crossing two homozygous white cats:
bb x bb = bb, bb, bb, and bb
All the offspring will be homozygous white with bb genotype.
Percentage of the offspring that are white = 100%
Percentage of the offspring that are black = 0%