Evolution of genome size: A phylogenetic test of the DNA loss hypothesis

Evolution of genome size: A phylogenetic test of the DNA loss hypothesis It has been recently suggested that the C-value paradox, the lack of an obvious association between organismal complexity and genome size, can result simply from biases in insertion and deletion rates—the DNA loss hypothesis. This hypothesis has been heavily criticized, particularly because its evidence, a negative relationship between genome size and DNA loss rate, is based on a highly selective use of the available data. In this study it is shown that the even the most favorable interpretation of the data favoring the DNA loss hypothesis is largely an artifact of phylogenetic nonindependence, supporting the assertion made by other authors that the mechanisms underlying genome size evolution might be more complex than envisioned by the DNA loss hypothesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Evolution of genome size: A phylogenetic test of the DNA loss hypothesis

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Inc.
Subject
Biomedicine; Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795407030180
Publisher site
See Article on Publisher Site

Abstract

It has been recently suggested that the C-value paradox, the lack of an obvious association between organismal complexity and genome size, can result simply from biases in insertion and deletion rates—the DNA loss hypothesis. This hypothesis has been heavily criticized, particularly because its evidence, a negative relationship between genome size and DNA loss rate, is based on a highly selective use of the available data. In this study it is shown that the even the most favorable interpretation of the data favoring the DNA loss hypothesis is largely an artifact of phylogenetic nonindependence, supporting the assertion made by other authors that the mechanisms underlying genome size evolution might be more complex than envisioned by the DNA loss hypothesis.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Mar 20, 2007

References

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