HEREDITY
INCOMPLETE DOMINANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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4 black:0 grey:0 white
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2 black:2 grey:0 white
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0 black:4 grey:0 white
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0 black:2 grey:2 white
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Detailed explanation-1: -Andalusian fowls have two pure forms black and white, If black forms (BB) and white forms (WW) are crossed, F1 individuals appear blue coloured (BW), due to incomplete dominance.
Detailed explanation-2: -In Andalusian fowl, the gene for black plumage (AB) is codominant to the gene for white plumage (AW). The heterozygous genotype results in expression of the black and white feathers and is referred to as blue plumange. 2. Cross a fowl with black plumage with a fowl with blue plumage.
Detailed explanation-3: -This phenomenon is termed incomplete dominance . The color of feather of chicken in question is similar to flower color of Mirabilis jalapa . The black color is represented by allele B and white color by allele W, as neither of these allele can dominate over the other.