NEET BIOLOGY

Detailed explanation-1: -The F2 generation results from self-pollination of F1 plants, and contained 75% purple flowers and 25% white flowers.

Detailed explanation-2: -Only purebred plants could be self-pollinated. What resulted when Mendel crossed two purple-flowered plants from an F1 generation? All the offspring had purple flowers.

Detailed explanation-3: -The F2 generation is 25% PP (homozygous dominant, purple flowers), 50% Pp (heterozygous, purple flowers), and 25% pp (homozygous recessive, white flowers). This is how the white characteristic reappears in the second generation. The phenotype is 3:1, purple to white.

Detailed explanation-4: -Mendel then crossed these pure-breeding lines of plants and recorded the traits of the hybrid progeny. He found that all of the first-generation (F1) hybrids looked like 1 of the parent plants. For example, all the progeny of a purple and white flower cross were purple (not pink, as blending would have predicted).

Detailed explanation-5: -Answer and Explanation:-What is the ratio of purple flowers to white flowers? 3 red flowers : 1 white flower. This is because 25% PP + 50% Pp of individuals (3/4 of all) produce purple flowers, while the1 pp individuals (1/4 of all) produce white flowers.