A Female Mouse from a True-Breeding Wild-Type Strain Was Crossed

question 45

Multiple Choice

A female mouse from a true-breeding wild-type strain was crossed to a male mouse with apricot eyes (ap) and grey body (gy) .The F₁ mice were wild-type for both traits.When the F₁ were interbred, the F₂ were distributed as follows: Which of the following statements is correct?

• A)ap and gy are unlinked.
• B)ap and gy are linked on an autosome and 10 map units apart.
• C)ap and gy are linked on an autosome and 20 map units apart.
• D)ap and gy are X-linked and 10 map units apart.
• E)ap and gy are X-linked and 20 map units apart.

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