In the pea strains used by Mendel, differences in flower color, pea shape, and pea color were controlled by a single gene. Purple flower color was dominant to white flower color, round peas were dominant to wrinkled peas, and yellow peas, were dominant to green peas. Mendel crossed a true breeding strain of peas with white flowers and round, green seeds to another true breeding strain with purple flowers and wrinkled, yellow seeds. The resulting trihybrids were then allowed to self-pollinate to produce a F2 population. a. In the trihybrids, what color(s) were the flowers, and what were the colors and shapes of the peas? b. what proportion of the F2 progeny had white flowers and round, green seeds? c. Of the progeny with these phenotypes (white flowers and round, green seeds), what proportion will be true breeding? d. How would the answers to the above parts be different if the first cross was between a true breeding strain with white flowers and wrinkled, yellow peas and another true breeding strain with purple flowers and round, green peas?