Question

Among seven pairs of traits studied by Mendal, the number of traits related to flower, pod and the seed were
(A) $2,2,2$
(B) $2,2,1$
(C) $1,2,2$
(D) $1,1,2$

Answer 1

Hint: Mendel studied the inheritance of the character and made a research in the Pisum sativum. He observed the variation in these experimental results. He controlled the pollination that happened between the pea plants, so that he can get the different forms of the traits.

Complete answer:
The characters and the contrasting trait that Mendal considered for his experiment are given below.

Character of the plant	Contrasting trait
Seed shape	Round/ wrinkled
Seed color	Yellow/ green
Pod shape	Inflated/ constricted
Pod color	Green/ yellow
Flower position	Axial/ terminal
Flower color	Violet/ white
Stem height	Tall/ dwarf

In his experiment, he had selected two characteristics of the seed, two characteristics of the pod, two characteristics of the flower and the one characteristics of the stem. Hence the number of traits he took for the flower, pod and the seed were $2,2,2$. By using these experiments he found out the law of segregation and the law of the independent assortment. This law states that the characters of the parent may be independently inherited in the offspring.

Thus the correct answer is option (A).

Note:Mendal selected the pea plants for his experiment since these plants have the several visible characteristics in the two different forms in them. And these plants also produce the result in the short period of time when compared to the other plant species.