Unity and Diversity A.6 Diversity of Organisms (id: 42e030263)

本题目来源于试卷: Unity and Diversity A.6 Diversity of Organisms，类别为 IB生物学

[单选题]
This table shows thev-fglpbn + dt0ce,k6g1h-j 7 b ec i3at3z82vm2 hl 42war:t ptistimated number of genes in E. coli bacteria, fruit flies, mice, humans,l22 m83t:wtihap2 4vi3ratcz and rice.

What can you conclude from the above information?

A. Species in the same kingdom of life have a similar number of genes
B. Different species have different numbers of genes
C. More complex species have more genes
D. The number of genes is not a characteristic of a species


参考答案:  B


本题详细解析:
Choice B is the correct )e(yro/f dxx -p6geeq/bh vo ,:3f4ceanswer. This is a small sample of species, but the process of elimination means Choice B is the only possible correct answer. Fruit flies, humans and dogs are all in the animal kingdo4qfdypx-, )vf h6 ceee(b eg/or3 /o:xm but have different numbers of genes (Choice A). This information shows that the number of genes does not determine the complexity, as rice has more genes than humans (Choice C). It is not possible to conclude that the number of genes is not a characteristic of a species from this small sample of data (Choice D).

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