Divergence patterns of banding sequences in different polytene chromosome arms reflect relatively independent evolution of different genome components

Divergence patterns of banding sequences in different polytene chromosome arms reflect relatively... Divergence patterns of the banding sequences of the chromosomal arms A, C, D, E, and F were compared in 63 species of the genus Chironomus. Evaluation of the number of breakpoints between the pairs of inverted banding sequences and the analysis of the lengths of the conserved segments in the chromosomal arms in the chironomid species examined showed that different arms evolved relatively independently and at different rates. No direct correlation between the arm length and the breakpoints number was observed. The length of the conservative segment was not fixed, but was arm-specific. Robustness and reliability of the estimates of phylogenetic relationships between the species examined increased with the arm number, i.e., with the genome proportion included in the analysis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Divergence patterns of banding sequences in different polytene chromosome arms reflect relatively independent evolution of different genome components

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Publisher
Springer Journals
Copyright
Copyright © 2005 by MAIK “Nauka/Interperiodica”
Subject
Biomedicine; Human Genetics; Microbial Genetics and Genomics; Animal Genetics and Genomics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1007/s11177-005-0107-8
Publisher site
See Article on Publisher Site

Abstract

Divergence patterns of the banding sequences of the chromosomal arms A, C, D, E, and F were compared in 63 species of the genus Chironomus. Evaluation of the number of breakpoints between the pairs of inverted banding sequences and the analysis of the lengths of the conserved segments in the chromosomal arms in the chironomid species examined showed that different arms evolved relatively independently and at different rates. No direct correlation between the arm length and the breakpoints number was observed. The length of the conservative segment was not fixed, but was arm-specific. Robustness and reliability of the estimates of phylogenetic relationships between the species examined increased with the arm number, i.e., with the genome proportion included in the analysis.

Journal

Russian Journal of GeneticsSpringer Journals

Published: May 10, 2005

References

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