Phenotype <span>refers to physical characteristics that are studied in genetics.</span>
They would have black and white because grey shows up as lavender or blue in a chicken and it can’t be black or white because it says BW that is together so it would have to be black and white
This is because when Mendel did it, he knew that peas are easy to raise, have plenty of offspring, fertilize themselves, and have varieties in genotype and phenotype that are easily observable.