A Certain Species of Fish Has Alleles for Red Scales

question 68

Multiple Choice

A certain species of fish has alleles for red scales and for blue scales.Mating a red-scaled fish to a blue-scaled fish yields fish with a patchwork of red and blue scales.Mating one of these patchwork fish to a blue-scaled fish yields half patchwork and half blue-scaled fish.What can you conclude about the red and blue alleles?

• A) The blue allele is dominant.
• B) The red allele is dominant.
• C) The red and blue alleles show incomplete dominance.
• D) The red and blue alleles are codominant.
• E) The alleles are pleiotropic.

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