The T Locus Is Involved in the Production of Tails

question 53

Multiple Choice

The t locus is involved in the production of tails in a mouse; tt individuals are without tails, whereas TT and Tt have tails.The l locus is involved in the color of tails: assuming that they have tails, individuals that are ll have light tails, whereas all others have dark tails.The two loci are on different chromosomes.In an F₂ cross between TTLL and ttll individuals, what fraction will have light tails?

• A) 1/16
• B) 3/16
• C) 1/4
• D) 1/2
• E) 9/16

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