Comparative cytogenetics of rodents

Comparative cytogenetics of rodents Here, we present analysis of data on comparative chromosome painting produced using various chromosome-specific libraries for members of different Glires groups. Based on the results of comparative cytogenetic and molecular studies, the modern rodents can be conventionally classified into two groups with sharply differing directions and tempos of karyotypic evolution. One group (suborders Sciuromorpha, Castorimorpha, and Anomaluromorpha) preserved conserved genomes, which are probably close in structure to the genome of the ancestor of all mammals. The genomes of the other group (suborder Myomorpha) underwent “catastrophic evolution,” which resulted in numerous breaks and fusions of the ancient chromosomes. The current data do not allow unambiguously assigning the order Hystricomorpha to any of these groups. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals
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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Biomedicine; Microbial Genetics and Genomics; Animal Genetics and Genomics; Human Genetics
ISSN
1022-7954
eISSN
1608-3369
D.O.I.
10.1134/S1022795410090334
Publisher site
See Article on Publisher Site

Abstract

Here, we present analysis of data on comparative chromosome painting produced using various chromosome-specific libraries for members of different Glires groups. Based on the results of comparative cytogenetic and molecular studies, the modern rodents can be conventionally classified into two groups with sharply differing directions and tempos of karyotypic evolution. One group (suborders Sciuromorpha, Castorimorpha, and Anomaluromorpha) preserved conserved genomes, which are probably close in structure to the genome of the ancestor of all mammals. The genomes of the other group (suborder Myomorpha) underwent “catastrophic evolution,” which resulted in numerous breaks and fusions of the ancient chromosomes. The current data do not allow unambiguously assigning the order Hystricomorpha to any of these groups.

Journal

Russian Journal of GeneticsSpringer Journals

Published: Sep 30, 2010

References

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