Abreed of chickens called silkies has white feathers due to a recessive allele. leghorns have white feathers due to a dominant allele in a second (different) gene. if true-breeding chickens of both breeds are crossed to each other, what is the expected phenotype of the f1 generation? if members of the f1 generation are mated to each other, what is the expected phenotypic outcome of the f2 ­generation? assume that the chickens in the parental generation are homozygous for the white allele at one gene and homozygous for the brown allele at the other gene. in subsequent generations, nonwhite birds will be brown.