49. In guinea pigs, rough coat is dominant to smooth coat and black is dominant to white.a) What letters would you allocate to the four alleles before beginning to work out the result of the various crosses? b) Write the combination of letters that would indicate the genotype of a pure rough coated black guinea pig mated with a homozygous white and smooth coated guinea pig. c) What would be the possible genotypes and phenotypes that would be produced by a cross between these two animals in their F1 and F2 generations?