Two true-breeding pea plants are crossed. One parent is round, terminal, violet, and constricted, while the other expresses the contrasting phenotypes of wrinkled, axial, white, and full. The four pairs of contrasting traits are controlled by four genes, each located on a separate chromosome. In the F1 generation, all possible combinations of these traits are expressed in ratios consistent with Mendelian inheritance.
a) What conclusion can you draw about the inheritance of these traits based on the F1 results?
b) Which phenotype appears most frequently in the F2 results?
c) Which F2 phenotype is expected to occur least frequently?
d) How often is either P1 phenotype likely to occur in the F2 generation?
e) If the F1 plant is testcrossed, how many different phenotypes will be produced?