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Vol. 9, Issue 10, 924-935, October 1999
Genomic Analysis of Caenorhabditis elegans Reveals Ancient Families of Retroviral-like Elements
Nathan J.
Bowen, and
John F.
McDonald1
Department of Genetics, University of Georgia,
Athens, Georgia 30602 USA
Retrotransposons are the most abundant and widespread class of
eukaryotic transposable elements. The recent genome sequencing of
Caenorhabditis elegans has provided an unprecedented
opportunity to analyze the evolutionary relationships among the entire
complement of retrotransposons within a multicellular eukaryotic
organism. In this article we report the results of an analysis of
retroviral-like long terminal repeat retrotransposons in C. elegans that indicate that this class of elements may be even more
abundant and divergent than previously expected. The unexpected
presence, in C. elegans, of an element displaying a number of
characteristics previously thought to be unique to vertebrate
retroviruses suggests an ancient lineage for this important class of
infectious agents.
1
Corresponding author.
9:924-935 ©1999 by Cold Spring Harbor Laboratory Press ISSN 1088-9051/99 $5.00

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