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Q.

A cross between two plants of Pisum sativum having violet coloured flowers, resulted in production of few plants producing white flowers. What would be the genotype of the parent plants?

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a

VV and Vv

b

Vv and Vv

c

VV and vv

d

VV and VV

answer is B.

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Detailed Solution

Violet flower is dominant trait and white flower is recessive trait. If violet flowered parents produce offspring which are white flowered then both parents are heterozygous. 
So their genotypes will be Vv and Vv.

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