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Evidence for DNA Loss
as a Deter minant of Genome
Size Science Volume 287, Number 5455 Issue of 11 Feb 2000, pp. 1060
- 1062
Dmitri A. Petrov, 1* Todd A. Sangster,
2 J. Spencer Johnston, 3 Daniel L. Hartl, 2 Kerry L. Shaw 2
Eukaryotic genome sizes range over five
orders of magnitude. This variation cannot be explained by differences
in organismic complexity (the C value paradox). To test the hypothesis
that some variation in genome size can be attributed to differences in
the patterns of insertion and deletion (indel) mutations among organisms,
this study examines the indel spectrum in Laupala crickets, which have
a genome size 11 times larger than that of Drosophila. Consistent with
the hypothesis, DNA loss is more than 40 times slower in Laupala than
in Drosophila.
1 Harvard University Society of Fellows,
2 Department of Organismic and Evolutionary Biology, Harvard University,
Cambridge, MA 02138, USA. 3 Department of Entomology, Texas A&M University,
College Station, TX 77843, USA. * To whom correspondence should be addressed.
E-mail: dpetrov@oeb.harvard.edu
(from Kabai
Péter: )
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