Question

It is said that Mendel proposed that the factor controlling any character is discrete and independent. His proposition was based on the

• A. Results of $F_3$ generation of a cross
• B. Observations that the offspring of a cross made between the plants having two contrasting characters shows only one character without any blending
• C. Self pollination of $F_1$ offsprings
• D. Cross pollination of $F_1$ generation with recessive parent

Answer 1

Answer: (B)

Observations that the offspring of a cross made between the plants having two contrasting characters shows only one character without any blending

Mendel crossed two parent plants having contrasting characters. He found that in the first filial generation, F1 generation, the dominant of the two expressed while the recessive is suppressed. Apart from this, When the f1 generation is self crossed, in the F2 generation, these recessive characters appear again. Therefore, it is not that they have disappeared.

So, option B is the correct answer.