Parental generation is the first generation involving two
individuals that are mated to foresee or analyze the genotypes of their
offspring. Their probable set of offspring
would constitute the so-called first filial generation (or F1 generation). A cross between two of the offspring
in F1 generation would produce a new set of progeny called second filial
generation (or F2 generation).In the P generation, a true breeding
pea plant with genotype YYRR is crossed with a true breeding plant with
genotype yyrr.
