Question

A cross between yellow flowered and round fruit (both dominant) bearing plant and white flowered elongated fruit (both recessive) bearing plant yielded 20 plants in progeny which formed 960 plants in generation. the number of plants with yellow flowers and round fruits in generations would be

Answer 1

We know that for dihybrid cross, the phenotypic ratio is 9:3:3:1,

where according to your question,

Yellow round=9x

Yellow elongated=3x

White round=3x

White elongated=x

Therefore, No, of plants with yellow flowers and round fruits would be:

9x/16x * 960 = 540(Ans.)

I am not sure about the answer, 65% chance I am wrong.