Question

Among seven pairs of traits studied by Mendel, the number of traits related to flower, pod and seed were

• A. 2, 2, 2
• B. 2, 2, 1
• C. 1, 2, 2
• D. 1, 1, 2.

Answer 1

The correct option is A 2, 2, 2

Mendel selected 14 true-breeding pea plant varieties, as pairs which were similar except for one character with contrasting traits.

S.No Character Contrasting traits Chromosome number

1. Stem height Tall / dwarf 4

2. Flower position Axial/terminal 4

3. Flower colour Violet/white 1

4. Pod shape Inflated/constricted 4

5. Pod colour Green/yellow 5

6. Seed colour Yellow/Green 1

7. Seed shape Round/wrinkled 7

In this 1 character is related to stem height, 2 characters are related to flower, 2 characters related to pod, 2 characters are related to seed.

So, the correct option is ‘2,2,2’.