In shorthorn cattle, coat color may be red, white, or roan.Roan is an intermediate phenotype expressed as a mixture of red and white hairs. The following data was obtained from variouscrosses:
red x red.........all red
white x white....all white
red x white........all roan
roan x roan.......1/4 red; 1/2roan;1/4 white
How is coat color inherited? What are the genotypes of parentsand offspring of each cross?