Mouse Pigmentation Is Subject to Epistasis of the B Alleles

question 98

Multiple Choice

Mouse pigmentation is subject to epistasis of the B alleles by the d alleles. B (black) is dominant over b (brown) , and D is dominant over d . Homozygous d is epistatic to the black and brown genes. Given this information, what will result from a F₁ cross between two mice? ​

• A)9/16 black, 3/16 brown, 4/16 white
• B)9/16 white, 3/16 brown, 4/16 black ​
• C)9/16 black, 6/16 brown, 1/16 white ​
• D)9/16 white, 6/16 brown, 1/16 black ​
• E)All black mice ​

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