Question

what will be F2 ratio if plant with YYRR and yyrr are crossed​

Answer 1

Answer:

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.