o The true-breeding parents are the P (parental) generation, and their hybrid offspring are the F 1 (first filial) generation. Mendel would then allow the F 1 hybrids to self-pollinate to produce an F 2 (second filial) generation. It was mainly Mendel’s quantitative analysis of F 2 plants that revealed two fundamental principles of heredity: the law of segregation and the law of independent assortment. The Law of Segregation If the blending hypothesis were correct, the F 1 hybrids from a cross between purple-flowered and white-flowered pea plants would have pale purple flowers. Instead, the F 1 hybrids all have purple flowers, just as purple as their purple-flowered parents. When Mendel allowed the F 1 plants to self-fertilize, the F 2 generation included both purple-flowered and white-flowered plants. o
This is the end of the preview.
access the rest of the document.