Question

A pure breeding triangular fruit-bearing plant of Shepherd's Purse is crossed with the ovoid fruit-bearing plant. The ratio of two types of plants in $F_2$ generation would be

• A. 3 : 1
• B. 1 : 2 : 1
• C. 13 : 3
• D. 15 : 1

Answer 1

The correct option is D 15 : 1

When a shepherd's purse plant with triangular capsule (AABB) is crossed with one having a top shaped capsule(aabb). F1 plants with only triangular shaped capsules are formed. When this F1 plant allowed for self-pollination produces F2 generation with triangular shaped and top-shaped capsules in the ratio of 15:1

So, the correct option is ‘15:1’.