Middle School Life Science Quiz
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HEREDITY: INHERITANCE AND VARIATION OF TRAITS
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Model: Proteins influence traits by affecting cell processes, but changes in proteins do not guarantee a visible change. In a fruit fly, Protein C helps nerve cells send signals quickly. A structural change slows Protein C activity. Evidence: Flies with changed Protein C reacted more slowly to a puff of air, but their wing shape was unchanged. Which explanation best links protein function to the trait outcome using the model?
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