Plumage in ducks is determined to some extent by a multiple allelic series of al

Question

Plumage in ducks is determined to some extent by a multiple allelic series of alleles named restricted (MR= white on the wing fronts), mallard (M = wild type), and dusky (md= darker plumage). MRis dominant to M, which is dominant to md. A) Can a mating between two mallard ducks produce any offspring with restricted plumage? Explain. B) A series of matings between two mallard ducks produced the following offspring: 34 mallard and 11 dusky ducks. What are the likely genotypes of the two mallard parents? C) Can a mating between two ducks with restricted plumage produce offspring with dusky plumage? Explain using diagrams of appropriate matings.

Explanation / Answer

recessives need a recessive gene from both parents to show up in the offspring. Only 1 in 4 of those will have both recessives pair up to show different plumage.

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