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 the estimated number of genes in E. coli baccoj0;e w/g:p.zer) dcteria, fruit flies,geozj)/cp:wcr d;e . 09 lz gsmeje(bs1go+ky9 646j k m1km seebk+g6s lj64 (9og j9zyice, humans, 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 answer. This is a small sample of b7 l(vs/4cncrnjo hb h;.l3p.3a3 zwi species, but the process of elimination means Choice B is the only possible c3iv 3 njw;san 73h rbpc.4lolz/h(bc.orrect answer. Fruit flies, humans and dogs are all in the animal kingdom 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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