HORTICULTURE

Detailed explanation-1: -The F1 generation results from cross-pollination of two parent (P) plants, and contained all purple flowers. The F2 generation results from self-pollination of F1 plants, and contained 75% purple flowers and 25% white flowers. This type of experiment is known as a monohybrid cross.

Detailed explanation-2: -For monohybrid cross, Mendel began with a pair of pea plants with two contrasting traits i.e., one tall and another dwarf. The cross-pollination of tall and dwarf plants resulted in tall plants. All the hybrid plants were tall.

Detailed explanation-3: -The first law of inheritance is the law of dominance. The law states that hybrid offspring will only inherit the dominant characteristics in the phenotype. The alleles that suppress a trait are recessive traits, whereas the alleles that define a trait are known as dominant traits.