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Curr Opin Genet Dev. 2004 Dec;14(6):620-6.

Evolution of genome size: multilevel selection, mutation bias or dynamical chaos?

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1
Institute of Cytology, Russian Academy of Sciences, Tikhoretsky Avenue 4, St Petersburg 194064, Russia. aevin@mail.cytspb.rssi.ru

Abstract

In the past two years, new data on conceptual aspects of the evolution of eukaryotic genome size have appeared, including the adaptivity of genome enlargement, the mechanisms of genome size change and the relation of genome size to organismal complexity. New data on the hypotheses of "selfish DNA" and "mutational equilibrium" have been recently obtained. A relationship is emerging between the intragenomic distribution of noncoding DNA and differential gene expression, which suggests that noncoding DNA is involved in epigenetic organization of the genome and organismal complexity. The standpoint of dynamical chaos, which integrates multilevel selection and mutation biases, may provide a framework for studying the evolution of genome size.

PMID:
15531156
DOI:
10.1016/j.gde.2004.09.007
[Indexed for MEDLINE]
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