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Problem 7 - Olympiad

A group of scientists is studying a newly discovered bacterium that thrives in extreme conditions. Researcher M proposes that this bacterium represents a relic of early life on Earth, adapted to primordial conditions. Researcher N suggests the bacterium evolved more recently, developing its extremophile traits through rapid adaptation to a niche created by specific geological activity. Which finding would most strongly support Researcher N's hypothesis?

Correct: C

Researcher N's hypothesis emphasizes recent evolution and adaptation, potentially through mechanisms like horizontal gene transfer (HGT). If genetic evidence shows recent horizontal gene transfer from other extremophile species (Choice C), it would strongly support the idea that the bacterium acquired its specialized traits through recent adaptation within a specific niche, rather than being an ancient relic. Choices A and B would support Researcher M's 'relic of early life' idea. Choice D describes a trait, but not its evolutionary origin.