In four-o'clocks, the allele for red flowers is incompletely dominant to the allele for white flowers, so heterozygotes have pink flowers. What ratios of flower colors would you expect among the offspring of the following crosses: (a) pink x pink, (b) white x pink, (c) red x red, (d) red - pink, (e) white x white, and (f) red x white? If you specifically wanted to produce pink flowers, which of these crosses would be most efficient? a) If a girl has blood type O, what could be the genotypes and corresponding phenotypes of her parents? b) If a girl has blood type B and her mother has blood type A, what genotype(s) and corresponding phenotype(s) could the other parent have? c) If a girl has blood type AB and her mother is also AB, what are the genotype(s) and corresponding phenotype(s) of any male who could not be the girl's father?