Calibrating bacterial evolution.

Proceedings of the National Academy of Sciences of the United States of America ·Vol. 96 ·No. 22 ·1999-10-26 ·Pages 12638-43

Ochman H, Elwyn S, Moran NA

Abstract

Attempts to calibrate bacterial evolution have relied on the assumption that rates of molecular sequence divergence in bacteria are similar to those of higher eukaryotes, or to those of the few bacterial taxa for which ancestors can be reliably dated from ecological or geological evidence. Despite similarities in the substitution rates estimated for some lineages, comparisons of the relative rates of evolution at different classes of nucleotide sites indicate no basis for their universal application to all bacteria. However, there is evidence that bacteria have a constant genome-wide mutation rate on an evolutionary time scale but that this rate differs dramatically from the rate estimated by experimental methods.

MeSH Terms

Bacteria/genetics Biological Evolution Mutation

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Ochman H

Department of Ecology, University of Arizona, Tucson, AZ 85721, USA. hochman@u.arizona.edu

Elwyn S

Moran N A

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Article Info

Journal

Proceedings of the National Academy of Sciences of the United States of America

Abbr.

Proc Natl Acad Sci U S A

ISSN

0027-8424

DOI

10.1073/pnas.96.22.12638

hochman@u.arizona.edu

Published

1999-10-26

Pages

12638-43

Language

English

Region

United States

NLM ID

7505876

PMCID

PMC23026

Subset

External Links

PubMed source DOI: 10.1073/pnas.96.22.12638 PMC Full Text View journal details

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