Wild type blue-eyed Mary has blue flowers. Two genes control…

Wild type blue-eyed Mary has blue flowers. Two genes control the pathway that makes the blue pigment: The product of gene W turns a white precursor into magenta pigment. The product of gene M turns the magenta pigment into blue pigment. Each gene has a recessive loss-of-function allele: w and m, respectively. A double heterozygote is self-pollinated. What proportion of offspring will be white?

In a mystical bird species, birds with the dominant allele C…

In a mystical bird species, birds with the dominant allele C are white, whereas birds homozygous for the recessive allele c are colored. This species also have a second locus that acts as a modifier gene if the bird is colored. If birds are colored and are G- at the second locus, they will be yellow. If they are colored and gg at the second locus, they will be green. You cross a double heterozygous bird and a double homozygous recessive (CcGg  x ccgg). What percentage of the offspring will be white, and what percentage will be yellow?