Model Organisms: Vocabulary in a Commentary
Researcher Priya is reading a commentary on model organisms. The passage says: 'Biologists often call the mouse a canonical model because its genetics are well mapped. But canonicity can become a trap: funding clusters around familiar species, and researchers may mistake convenience for representativeness. A beetle that thrives in leaf litter might answer questions the mouse cannot, yet it is rarely funded.' Priya's exam item asks for the meaning of 'canonical' in context, then for the function of 'trap,' then for an implication. She knows the ordinary dictionary meaning of canonical is 'according to rule,' but the passage ties it to well-mapped genetics and funding. She has to use context, not the dictionary alone, and avoid overreading 'trap' as a deliberate conspiracy.
1. In context, what does 'canonical' most nearly mean? Explain why 'perfect' is wrong.
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In context, 'canonical' means standard, established, or widely used as a reference model. The passage supplies the reason: the mouse is called canonical 'because its genetics are well mapped.' The contrast with a beetle that is 'rarely funded' reinforces that canonicity is about familiarity and research use, not about biological superiority.
'Perfect' is wrong because the passage immediately criticizes canonicity: it 'can become a trap.' A perfect model would not be described as a risk. The dictionary sense 'according to rule' is too general here; the surrounding words point to a conventional model that attracts study. Context should override a loose dictionary gloss.
2. What is the function of 'trap' in the sentence 'canonicity can become a trap'?
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'Trap' is a metaphor for a self-reinforcing limitation. The passage explains it with two effects: funding clusters around familiar species, and researchers may confuse convenience with representativeness. In other words, a model can become standard for good reasons and then keep attention narrow for less good reasons.
The word does not imply a literal trap or a deliberate conspiracy. It signals a structural risk: familiarity attracts resources, and that attraction can crowd out less familiar organisms that might answer different questions. A strong answer should connect the metaphor to the explanatory clauses that follow it.
3. What does the passage imply about funding? Choose: (A) mice are unworthy of funding; (B) funding follows familiarity and may not track representativeness; or (C) beetles are better models. Explain.
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B is the best choice. The passage says 'funding clusters around familiar species' and that the beetle 'is rarely funded.' That supports an implication that funding patterns favor established models and may not reflect how representative a species is for a given question.
A overreads the critique: the passage does not say mice are unworthy. C also overreads: the beetle 'might answer questions the mouse cannot,' which is a possibility, not a claim of superiority. The passage's point is about narrowing effects of canonicity, not about replacing one model with another.