Higher rates of mutation are found in RNA viruses. Why? Replication of their genomes does not involve proofreading. RNA viruses can incorporate a variety of nonstandard bases. RNA nucleotides are more unstable than DNA nucleotides. RNA viruses are more sensitive to mutagens.

Higher rates of mutation are found in RNA viruses. Why? Replication of their genomes does not involve proofreading. RNA viruses can incorporate a variety of nonstandard bases. RNA nucleotides are more unstable than DNA nucleotides. RNA viruses are more sensitive to mutagens.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter13: An Introduction To Genetic Technology

Section: Chapter Questions

Problem 5QP

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Concept explainers

Viral Replication

The virus is acellular and considered non-living outside the host cell. The replication of the virus occurs only inside the living cells. Only a few genes are present in the smallest virus, whereas many genes are present in the largest virus. These genes encode specific viral proteins.

Question

Higher rates of mutation are found in RNA viruses. Why?
Replication of their genomes does not involve proofreading.
RNA viruses can incorporate a variety of nonstandard bases.
RNA nucleotides are more unstable than DNA nucleotides.
RNA viruses are more sensitive to mutagens.

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