Elongated and Five Are Two Genes in a Housefly That

question 115

Multiple Choice

Elongated and Five are two genes in a housefly that are 24 centiMorgans (cM; map units) apart.The E allele of Elongated produces elongated wings, and the e allele produces small wings (E is dominant) .The F allele produces five stripes on the back of the fly, and the f allele produces four stripes (F is dominant) .In a cross of EeFf  eeff, what proportion of the offspring should have elongated wings and five stripes?

• A) 0 percent
• B) 12 percent
• C) 24 percent
• D) 38 percent
• E) 76 percent

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