CBSE Class 10 Science 2023 Delhi Set 1

Question : 10 of 39

Marks: +1, -0

A cross between pea plant with white flowers (vv) and pea plant with violet flowers (VV) resulted in

{\F}_2

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

{\F}_1

. When

{\Vv}_{ {\v}}

crosses with

{\Vv}, {\F}_2

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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