question_answer 39)

  In order to obtain the F1 -generation Mendel pollinated a pure-breeding all plant with a pure-breeding dwarf plant. But for getting the F2 -generation, he simply self-pollinated the tall  plants. Why?

Answer:

                  Characters segregate during gamete formation. Pure-breeding parents give rise to F1withheterozygous conditions. Only self-pollination of heterozygotes can result in all possible recombinations of characters in progeny as mating is random.