For the three mallard duck alleles described, which allele would correspond

In mallard ducks, Anas platyrhynchos, plumage is under the control of a single gene with three alleles: M, which codes for wild-type mallard plumage; MR, which codes for restricted plumage (a modified mallard pattern with white on the wing fronts at maturity); and MD, which codes for ducky plumage (darker and plainer than the mallard). Below are four different crosses, along with the phenotypes observed among their offspring.

1. dusky x mallard ? 1/2 dusky, 1/2 mallard

2. dusky x restricted ? 1/2 dusky, 1/2 restricted

3. mallard x mallard ? 3/4 mallard, 1/4 dusky

4. mallard x restricted ? 1/2 restricted, 1/4 mallard, 1/4 dusky

Use this information to determine the dominance order among these alleles.

Part A -

A generic dominance hierarchy can be expressed as allele #1 > allele #2 > allele #3, in which allele #1 is dominant to allele #2 and allele #2 is dominant to allele #3.

For the three mallard duck alleles described, which allele would correspond to the generic "allele #1"?

a.M b. M^R c. M^D

                                                                                                                          

Part B -

A generic dominance hierarchy can be expressed as allele #1 > allele #2 > allele #3, in which allele #1 is dominant to allele #2 and allele #2 is dominant to allele #3.

For the three mallard duck alleles described, which allele would correspond to the generic "allele #2"?

a.M b. M^R c. M^D

Part C -

A generic dominance hierarchy can be expressed as allele #1 > allele #2 > allele #3, in which allele #1 is dominant to allele #2 and allele #2 is dominant to allele #3.

For the three mallard duck alleles described, which allele would correspond to the generic "allele #3"?

a.M b. M^R c. M^D