Fig. 3

Putative pedigrees of Crimson × Yellow in Mirabilis jalapa. a, pedigree adopted from Showalter [27], the gray square indicates the imprecise relationship between pollens and eggs in bulked pollination before Mendel’s M. jalapa work; b. assumed pedigree of the single pollen experiment completed by Mendel; the rectangle marks Mendel’s precise operation between one pollen grain and one ovule in M. jalapa