Question

If a F₁ plant in a dihybrid ratio is crossed with a recessive plant, the ratio obtained will be

(A) 1 : 1 : 1 : 1

(B) 1 : 1 : 1 : 2

(C) 9 : 3 : 3 : 1

(D) 1 : 1

Answer 1

(A) 1 : 1 : 1 : 1

When the F₁ dihybrid is crossed with a recessive plant, it is called dihybrid test cross.