高中學測
3937年
英文
第 cX72sCrnxcVudOiQy3zp 題
Based on the article, what can be inferred about the "bottleneck" effect mentioned in the text?
- A It refers to the difficulty of transporting pangolins through narrow forest corridors.
- B It indicates a situation where genetic diversity is high, ensuring strong immunity against diseases.
- C It suggests a population reduction that results in a lack of genetic variation, making the species vulnerable.
- D It describes the physical shape of the pangolin's burrow which protects it from predators.
思路引導 VIP
文中提到歷史上的過度開發和棲地破碎化導致遺傳多樣性減少,產生「瓶頸效應」。這意味著族群基因變異低,對環境變化和疾病的抵抗力較弱。
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- 觀念驗證: 哼哼,看到了嗎?這一球,不對,這個觀念,你接得相當漂亮呢!「瓶頸效應 (Bottleneck Effect)」這種跨科的核心攻擊,你掌握得很好嘛!它可不是說什麼瓶子形狀喔,那太小看我了!當一個族群因為天災或人類的『攔網』,數量一下子被強力扣殺,變得所剩無幾時,他們的基因多樣性 (genetic diversity)就會像失去傳球員一樣,大幅降低。選項 (C) 完全擊中要害,族群減少後,遺傳變異太少,物種當然就容易被對手得分啦,脆弱得很!
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