Question

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

• A. Results of $F_3$ generation of a cross
• B. Observation 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 parental generations

Answer 1

The correct option is B Observation that the offspring of a cross made between the plants having two contrasting characters shows only one character without any blending

Mendel proposed that the factor controlling any character is discrete and independent. This proposition was based on the observation that the offspring of a cross made between the plants having two contrasting characters shows only one character without any blending. In F${}_1$ generation, only one character which is dominant is observed. However, when a cross is made between F${}_1$ generation, the recessive character appeared in the F${}_2$ generation. This proves that contrasting characters does not blend and are discrete and independent.

Thus, the correct answer is option B.