A Pure-Breeding Fruit Fly with Curled Wings Mates with a Pure-Breeding

question 7

Multiple Choice

A pure-breeding fruit fly with curled wings mates with a pure-breeding fruit fly with normal (straight) wings.The F₁ mate with each other to produce an F₂ generation that consists of 160 flies with curled wings and 80 with straight wings.What can you infer from this observation?

• A)Curled wings is a recessive trait.
• B)The dominant curled wing allele is also a recessive lethal.
• C)Wing shape is controlled by two codominant alleles.
• D)Two interacting genes determine wing shape.
• E)All of the hybrid F₁ flies had straight wings.

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