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Feather coloration in a variety of chicken is determined by a codominant alleles. if a chicken...

Feather coloration in a variety of chicken is determined by a codominant alleles. if a chicken with white feathers produces offspring with a chicken that has black feathers, what feather coloration would you expect in the offspring? if two chickens with this pattern of feather coloration where to breed, how many of the offspring would have the same phenotype as their parents?

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Answer #1

It is given that the feather coloration in a variety of chicken is determined by a codominant allele. If a chicken with white feathers produces offspring with a chicken that has black feathers means we need to cross a black chicken with a white chicken then,

White chicken = WW

Black chicken = BB

i.e BB X WW will give all offsprings with BW genotype (punnet square) due to codominance. Here, BW offsprings will show both white and black coloration in their feathers because both B and W genes will express due to codominance.

If two chickens with this pattern of feather coloration were to breed,

i.e. BW X BW will give offsprings with genotypes BB, BW, BW, and WW. (by punnet square). So, there are 50% chances of offspring having the same phenotype as their parents i.e 25% for BB and 25% for WW.

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