The Foundation of Genetics
Parental Cross - F1 Hybrid - F2 Phenotypes - F2 Ratio
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Round X Wrinkled Seed Round 5474 Round :1850 Wrinkled 2.96 : 1
Yellow X Green Seeds Yellow 6022 Yellow : 2001 Green 3.01 : 1 Red X White Flowers Red 705 Red : 224 White 3.15 : 1 Tall X Dwarf Plants Tall 1787 Tall : 227 Dwarf 2.84 : 1
Gregor Mendel developed pure lines of plants, bred them together, and counted the results. He found that traits showed dominance over others. When he self-pollinated the F1 hybrid, he found that predictable patterns of traits would be found in the offspring. This showed that mechanisms were involved with the production of variability.