$F_{2}$ generation has genotypic and phenotypic ratio 1 : 2 : 1. It is ________________.

Codominance

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Dihybrid cross

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Monohybrid cross with complete dominance

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Monohybrid cross with incomplete dominance.

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Solution

The correct option is D Monohybrid cross with incomplete dominance.

A.Codominance – Phenotypic and genotypic ratio is 1:2:1

B.Dihybrid cross – Phenotypic ratio is 9:3:3:1 and genotypic ratio is 1:2:2:4:1:2:1:2:1

C.Monohybrid cross with complete dominance – phenotypic ratio is 3:1 and genotypic ratio is 1:2:1

D.Monohybrid cross with incomplete dominance - Phenotypic and genotypic ratio is 1:2:1
So, the correct option is ‘Codominance & Monohybrid cross with incomplete dominance’.

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