Suppose There Is (Hypothetical)evidence That a Gene in Mice Produces

question 7

Multiple Choice

Suppose there is (hypothetical) evidence that a gene in mice produces a substance that induces twitchiness in hind leg muscles.A female mouse of a true-breeding twitchy strain is mated with a male of a true-breeding non-twitchy strain.All progeny are twitchy.Which of these procedures would you use to provide evidence for your hypothesis that twitchiness is due to mtDNA?

• A)sequence the mtDNA of the twitchy mother
• B)breed twitchy male progeny with normal females to show no paternal inheritance
• C)breed twitchy female with twitchy male F₁ mice to verify there is maternal inheritance
• D)backcross twitchy female offspring with normal fathers
• E)sequence the mtDNA of the twitchy male offspring

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