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 the F3 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 F1 offsprings
d. cross-pollination of F1 generation with recessive parent
The answer is the option (b) observations that the offspring of a cross, made between the plants having two contrasting characters shows only one character without any blending.
Explanation: It was observed by Mendel that when two pairs of varying characters are analyzed during dihybrid cross, the behavior of a particular character is independent of another character. Hence, the correct answer is (b).