Read the short passage below and match each excerpt to its structural function within the passage.
Passage:
Evolutionary biologists have long debated whether behavioral plasticity promotes or impedes genetic adaptation. A recent empirical study of urban house finches demonstrates that behavioral shifts in foraging allowed populations to colonize novel habitats prior to any observable genetic changes. This finding supports the broader claim that flexible behavioral responses frequently serve as the primary engine driving evolutionary diversification.
- Flexible behavioral responses frequently serve as the primary engine driving evolutionary diversification.Main Idea (Author's central thesis / overarching conclusion)
- A recent empirical study of urban house finches demonstrates that behavioral shifts in foraging allowed populations to colonize novel habitats prior to any observable genetic changes.Supporting Evidence (Specific empirical finding used to substantiate a claim)
- Evolutionary biologists have long debated whether behavioral plasticity promotes or impedes genetic adaptation.Background Context (Framing of an ongoing scholarly debate)
Cevap
The main thesis corresponds to the broad claim that behavioral flexibility drives diversification; the house finch study corresponds to supporting evidence; and the mention of the long-standing debate provides background context.
The central thesis is the generalized claim that behavioral flexibility drives evolution. The urban house finch study is a specific factual example serving as supporting evidence for that main claim. The mention of the ongoing debate establishes the background context.
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Anahtar Kavram
Distinguishing Main Idea from Supporting Evidence