Q genotype biology pigs In guinea pigs, black hair is dominant over white hair. What is the genotype of a homozygous black guinea pig? Answer by expert Jack Hire an expert Our experts in all academic subjects are available 24/7. Don't hesitate to ask questions and start discussions whenever you need professional advice. A Solution B – black b – white Homozygous black: BB Answer: BB Biology 4 years ago 268 Views