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AP Biology/Unit 8: Ecology
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Parallel Evolution and Selective Pressure

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A specific enzyme pathway in plants evolved independently on two continents following their geographic separation 120 million years ago. Which of the following most likely accounts for this instance of parallel evolution?

A

Horizontal gene transfer between unrelated species

B

Long-term isolation creating distinct selective pressures

C

Human introduction of invasive species

D

Global climate change altering precipitation patterns

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