Question

(a) Mendel crossed tall pea plants with dwarf pea plants in his experiment. Write his observations giving reason on the F1 and F2 generations. (b) List any two contrasting characters other than height that Mendel used in his experiments in pea plants.

Answer 1

Mendel crossed F1 and F2 plants and got a punnet square upon that. The ratio for the offsprings was 9:3:3:1.

Explanation:

• He crossed a tall, green, round, wrinkled trait.

• The majority were dominant.

• He crossed a tall pea plant with the dwarf pea plant.

• The results were the same as it is mentioned above that is 9:3:3:1.

• He got wrinkled yellow, green wrinkled, green round, yellow round.

• Some traits were recessive and some were dominant.

• Most of the offsprings were dominant due to the dominant character of tall pea plants.

Learn more about it.

Explain Mendel experiment

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Answer 2

Answer:

(a) When tall plants were crossed with the dwarf pea plants in the Mendel's experiment, then in the first generation i.e. F1 progeny, only tall plants were obtained and no dwarf plant was obtained. In F2 progeny, there were both tall and dwarf pea plants. The ratio of dwarf and pea plants was found to be 3:2 which confirmed that in F2 progeny, both the characteristics were inherited and the tall character of pea plant was found to be dominative and dwarf to be recessive.

(b) The two contrasting characters other than height that Mendel used in his experiments in pea plants were round and green seeds, and wrinkled and yellow seeds