无忧得胜-网上国际课程 (5edu.win)

 找回密码
 立即注册

手机扫一扫,访问本页面

开启左侧

Continuity and Change D.10 Natural Selection (id: 6fe79ab18)

[复制链接]
admin 发表于 2025-12-26 12:43:15 | 显示全部楼层 |阅读模式
本题目来源于试卷: Continuity and Change D.10 Natural Selection,类别为 IB生物学

[单选题]
In the Indian ocean, sd8 4 asarm2;j/zm tlb.and coloured oysters blend rrc 767 py.of6p8jgdxpr :gu)into rocks in the sand bar and dark coloured oysters blend better into the deepest partfjug7d6)rg:pc8. po pyr 76x rs of the ocean. What type of selection is this an example of?

A. Directional selection
B. Stabilising selection
C. Disruptive selection
D. Artificial selection


参考答案:  C


本题详细解析:

It is disruptive selection, as any intermediate varieties of oysters have been selected against. Choice C is correct.

Choice A is incorrect as directional selection would mean that the population moves towards one extreme, i.e. either dark or light coloured oysters. Choice B is incorrect as stabilising selection promotes intermediate varieties and gets rid of extreme varieties. Choice D is incorrect as artificial selection is controlled by humans.

微信扫一扫,分享更方便

帖子地址: 

回复

使用道具 举报

您需要登录后才可以回帖 登录 | 立即注册

本版积分规则

浏览记录|手机版试卷|使用帮助|手机版|无忧得胜-网上国际课程 (https://5edu.win)

GMT+8, 2026-6-24 08:43 , Processed in 0.062582 second(s), 39 queries , Redis On.

搜索
快速回复 返回顶部 返回列表