Pattern of X-Y Chromosome Pairing in Microtine Rodents
- 28 May 2004
- journal article
- research article
- Published by Springer Science and Business Media LLC in Hereditas
- Vol. 123 (1), 17-23
- https://doi.org/10.1111/j.1601-5223.1995.00017.x
Abstract
Pairing of X and Y chromosomes at meiotic prophase in 14 species of the subfamily Microtinae (Clethrionomys rufocanus, C. rutilus, C. glareolus, Arvicola terrestris, Microtus guentheri, M. socialis, M. afghanus, M. bucharicus, M. oeconomus, M. arvalis, M. rossiaemeridionalis, M. kirgisorum, M. transcaspicus, M. (Pitymys) majori) was analysed in relation to their taxonomic position and variation in the morphology of their sex chromosomes. The sex chromosomes formed a synaptonemal complex (SC) at pachytene in all Clethrionomys species, Arvicola terrestris, and M. oeconomus, while they did not pair at all in M. (Pitymys) majori, Microtus socialis, M. guentheri, M. afghanus, M. bucharicus, M. arvalis, M. rossiaemeridionalis, M. kirgisorum, and M. transcaspicus. The X chromosome of these species varied in centromere position independently of pairing pattern. Insertion of heterochromatin of different size and location was found in some, but not in all species with asynaptic sex chromosomes. It is suggested that the sex chromosomes lost their ability to pair at male meiosis in the common ancestor of palearctic species of the genus Microtus. This event was not caused by a gross chromosomal rearrangement.Keywords
This publication has 16 references indexed in Scilit:
- Absence of synapsis during pachynema of the normal sized sex chromosomes of Microtus arvalisHereditas, 2008
- The behavior during pachynema of a normal and an inverted Y chromosome in Microtus agrestisHereditas, 2008
- The Curious Normality of the Synaptic Association Between the Sex Chromosomes of two Arvicoline Rodents: Microtus Oeconomus and Clethrionomys GlareolusHereditas, 2004
- Achiasmatic giant sex chromosomes in the vole Microtus cabrerae(Rodentia, Microtidae)Cytogenetic and Genome Research, 1991
- Achiasmatic sex chromosomes in Pitymys duodecimcostatus: mechanisms of association and segregationCytogenetic and Genome Research, 1991
- Phylogeny of the Arvicolidae (Rodentia): Biochemical and Paleontological EvidenceJournal of Mammalogy, 1988
- Controlled silver-staining of nucleolus organizer regions with a protective colloidal developer: a 1-step methodCellular and Molecular Life Sciences, 1980
- End association and segregation of the achiasmatic X and Y chromosomes of the sand rat, Psammomys obesusChromosoma, 1980
- Bone Marrow Preparations for Chromosome StudiesPublished by Springer Science and Business Media LLC ,1969
- An Air-Drying Method for Meiotic Preparations from Mammalian TestesCytogenetic and Genome Research, 1964