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In the domesticated chickens, a dominant allele C is needed for colored feathers, but the dominant allele I of the unlinked gene is an inhibitor of colour which overrides the effects of C. White Leghorns CC II whereas White Wyandottes have genotype cc ii. Both breeds are white, however for different reasons. In F2 generation of cross between White Leghorns and White Wyandottes.

a) What is phenotypic ratio of white: colour?

b) Among F2 chickens which are white, what is proportion of CcLi?

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