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Monohybrid Cross

A pea plant p...

Question

A pea plant parent having violet-coloured flowers with unknown genotype was crossed with a plant having white-coloured flowers. In a progeny, 50% of the flowers were violet and 50% were white. The genotypic constitution of the parent having violet-coloured flowers was

A

Homozygous

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B

Merozygous

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C

Heterozygous

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D

Hemizygous

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Solution

The correct option is C Heterozygous
The cross between violet-flowered plant and white-flowered plant:
Vv (violet) X vv (white)
$F_{1}$ - Vv, Vv, vv, vv
So, the phenotypic ratio is 1 violet : 1 white.
So, the genotypic constitution of the parent having violet-coloured flowers was heterozygous(Vv).

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