本题目来源于试卷: Unity and Diversity A.5 Viruses，类别为 IB生物学
[单选题]
The origin of viruse4j8u2d5u0rv zt w8 lyps is an area of active researchcio6ax0t: e4v))i9r :gz 6msa uwifv/i6i, va and exploration. Which statement is not evi rif/g,v6iw6aa6um 49)azicv: te )vis x:0oidence that viruses have origins in other organisms?
A. Similarities between genome sequence in viral and cellular genes.
B. Coevolution of viruses and host.
C. Retroviral enzymes such as reverse transcriptase convert RNA to DNA.
D. Rate of mutation is rapid in viruses.
参考答案: D
本题详细解析:
Choice D is correct because th ;(kx- e0z0ygurol3 eae rapid mutation rate is not evidence of viral origins, but rather a characteristic of some viruses. Similae y;3olkz(ge -0u 0arxrities between genome sequences in viral and cellular genes (Choice A), the coevolution of viruses and hosts (Choice B), and retroviral enzymes converting RNA to DNA (Choice C), are all evidence of viral origins from other organisms.
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