Humans can express blood types A, B, AB, or O. In order for a person to express blood type O, they must inherit the allele for O type blood from both parents. A person would express AB type blood if they inherited the A allele from one parent and the B allele from the other parent. Therefore, blood type in humans demonstrates a
complete dominance
b
codominance
c
incomplete dominance
d
complete dominance and codominance
e
incomplete dominance and codominance

Suppose a particular species of tulip plant has three alleles for the gene that codes for flower color. the cr allele produces red tulips, the cp allele produces purple tulips, and the cw allele produces white tulips. cr is dominant over cp and cw, and cp is dominant over cw. for each of the following crosses, determine the expected ratio of offspring for each flower color. cr cp x cp cw cr cw x cp cw 1 red: 1 purple : 0 white, 1 red: 2 purple: 1 white, 2 red: 1 purple 1 white, 1 red: 3 purple : 0 white, 2 red: 0 purple : 2 white, 2 red: 2 purple : 0 white