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NEET Biology question

BiologyPrinciples of Inheritance and VariationNEET

When a cross is conducted between black feathered hen and a white feathered cock, blue feathered fowls are formed. When these fowls are allowed for interbreeding, in -generation, there are 20 blue fowls. What would be the number of black and white fowls?

Answer: (C)

Solution

Blue Andalusian fowl colour shows incomplete dominance, so the (Bb, blue) self-crossed gives in the genotypic/phenotypic ratio black () $:

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Question ID VK-119418