The coat color in mink is controlled by two codominant alleles at a single locus

Question

The coat color in mink is controlled by two codominant alleles at a single locus. Red coat color is produced by the genotype R1 R1, silver coat by the genotype R1 R2, and platinum color by R2 R2. White spotting of the coat is a recessive trait found with the genotype ss. Solid coat color is found with the S - genotype.


Part A: What are the expected progeny phenotypes for the cross Ss R1 R2 x ss R2 R2 ?
Check all that apply.
spotted platinum
spotted silver
spotted red
solid platinum
solid silver
solid red

Explanation / Answer

The coat color in mink is controlled by two codominant alleles at a single locus.

Red coat color is produced by the genotype R1 R1,

silver coat by the genotype R1 R2,

and platinum color by R2 R2.

White spotting of the coat is a recessive trait found with the genotype ss.

Solid coat color is found with the S - genotype.


Part A: What are the expected progeny phenotypes for the cross Ss R1 R2 x ss R2 R2 ?

The coat color in mink is controlled by two codominant alleles at a single locus. Red coat color is produced by the genotype R1 R1, silver coat by the genotype R1 R2, and platinum color by R2 R2. White spotting of the coat is a recessive trait found with the genotype ss. Solid coat color is found with the S - genotype.

Ss x ss

Ss

ss

R1 R2 x R2 R2

R1 R2 ; R2R2

Check all that apply.

spotted platinum ssR2 R2
spotted silver ss R1 R21
solid platinum R2 R2
solid silver Ss R1 R2

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