CBSE Class 10 Science 2023 Delhi Set 1

Question : 10

Total: 39

A cross between pea plant with white flowers (vv) and pea plant with violet flowers (VV) resulted in F2 progeny in which ratio of violet (VV) and white (vv) flowers will be:

Solution:

When VV crosses with vv, all will be Vv (violet) in F1. When Vvv crosses with Vv,F2 will contain VV,Vv,vV, and vv out of which only vv is white flowers, rest are violet flowers. So, ratio is 3:1.

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