Please help me this is phisics

2.77 x 10^-3 its for plato user 

Answer would be

Hi im  doing the same thing u did to me  a black rooster mates with a white hen.  based on their genotypes, the chance that the offspring will be checkered is 100 percent.  what is the rooster’s genotype?   what is the hen’s genotype? the rooster genotype is  bb  bb  bb  bw  .  the hen’s genotype is  ww  ww  ww  bw  .