本题目来源于试卷: Unity and Diversity A.8 Evolution and Speciation，类别为 IB生物学
[单选题]
It is thought that the con :*i-6mcu b jmjzz4h6sgo river divided a po 3a/6li r ipw6nwg)ry 5pulation of the common ancestor of bonobos (Pan paniscus) and chimpanzees ( g6/5in w p6i)lrr3wyaPan troglodytes), resulting in geographic isolation. Which correctly pairs theoretical selection pressures and consequent adaptations of the two populations?
A.
B.
C.
D.
参考答案: B
本题详细解析:
Choice B is correct bet 5p86 mar)awrcause a scarcity of food as well as competition with gorillas, led to)8at r6ma5 pwr increased aggression in the ancestral population to chimpanzees and plentiful food on the south side of the river, as well as an absence of gorillas led to increased cooperation in the ancestral population of bonobos.
Choice A is incorrect because there was and is no difference in solar radiation on either side of the Congo River. Choice C is incorrect because the selection pressures and adaptations are reversed in terms of where they existed (south side vs. north side). Choice D is incorrect because food scarcity led to more aggression, and plentiful food led to more cooperation.
| 
