In the sweet pea crossing experiment by Bateson and Punnetthe F2 generation had many more offspring with the phenotypes of purple flowers P, long pollen L and red flowers p, round pollen l than expected from independent assortment. This is because
A. in sweet peas, there are always more PL gametes than Pl ones.
B. in sweet peas, the alleles for flower color and pollen shape are on the same chromosome.
C. there were few recombination events between these genes during meiosis.
D. flower color and pollen shape are within the same linkage group.
E. All of the statements given are true.