Skin color in a certain species of fish is inherited via a single gene with four different alleles. Each allele confers a unit of color darkness such that having allele S1 confers one unit of color, S2 has two units, S3 has three units, and S4 confers four units. A fish of this type has the genotype S1S3, and its mate has the genotype S2S4. What proportion of their offspring would be expected to have five units of color?
A) 1/4
B) 1/8
C) 1/2
D) 0

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The Answer of Skin color in a certain species of fish is inherited via a single gene with four different alleles. Each allele confers a unit of color darkness such that having allele S1 confers one unit of color, S2 has two units, S3 has three units, and S4 confers four units. A fish of this type has the genotype S1S3, and its mate has the genotype S2S4. What proportion of their offspring would be expected to have five units of color?
A) 1/4
B) 1/8
C) 1/2
D) 0

Skin Color in a Certain Species of Fish Is Inherited