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 viruses is an allv ywrx 8sh-0n/ ultvj,1l .-e87 cq1fny+ u;knycl 7rea of active research and exploration. Which statement is not uc nfne ;l+7y1yq8kc 7evidence 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 the rapid mutat-pe*nfnn5 sq0 eg*j0 dion rate is not evidence of viral origins, but rather a characteristic of some viruses. Similarities 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 origj n0ne5sde0qfgp- n** ins from other organisms.
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