Question

In the cross YYRR $\times$ yyrr, the number of green coloured seeds in $F_2$ generation is __________.

• A. 8/16
• B. 6/16
• C. 4/16
• D. 2/16.

Answer 1

The correct option is C 4/16

In a dihybrid cross, a plant with yellow colour round seeds(YYRR) is crossed to green colour wrinkled(yyrr) seeds. In the F1 generation, plant with yellow colour wrinkled seeds(YyRr) are formed. When F1 plant is subjected to self pollination, in the F₂ generation 9 plants are Yellow round(1YYRR,2YYRr,2YyRR, 4YyRr) 3 plants are yellow wrinkled(1YYrr,2Yyrr) 3 plants are green round(1yyRR, 2yyRr) and 1 plant is green wrinkled(1yyrr) are formed phenotypically.

So, the correct option is ‘4/16’.