Title |
Tracking the evolution of sex chromosome systems in Melanoplinae grasshoppers through chromosomal mapping of repetitive DNA sequences
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Published in |
BMC Ecology and Evolution, August 2013
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DOI | 10.1186/1471-2148-13-167 |
Pubmed ID | |
Authors |
Octavio M Palacios-Gimenez, Elio R Castillo, Dardo A Martí, Diogo C Cabral-de-Mello |
Abstract |
The accumulation of repetitive DNA during sex chromosome differentiation is a common feature of many eukaryotes and becomes more evident after recombination has been restricted or abolished. The accumulated repetitive sequences include multigene families, microsatellites, satellite DNAs and mobile elements, all of which are important for the structural remodeling of heterochromatin. In grasshoppers, derived sex chromosome systems, such as neo-XY♂/XX♀ and neo-X1X2Y♂/X1X1X2X2♀, are frequently observed in the Melanoplinae subfamily. However, no studies concerning the evolution of sex chromosomes in Melanoplinae have addressed the role of the repetitive DNA sequences. To further investigate the evolution of sex chromosomes in grasshoppers, we used classical cytogenetic and FISH analyses to examine the repetitive DNA sequences in six phylogenetically related Melanoplinae species with X0♂/XX♀, neo-XY♂/XX♀ and neo-X1X2Y♂/X1X1X2X2♀ sex chromosome systems. |
X Demographics
Geographical breakdown
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Unknown | 1 | 100% |
Demographic breakdown
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
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Brazil | 2 | 4% |
Czechia | 1 | 2% |
United Kingdom | 1 | 2% |
Russia | 1 | 2% |
Poland | 1 | 2% |
Unknown | 42 | 88% |
Demographic breakdown
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Student > Bachelor | 10 | 21% |
Student > Ph. D. Student | 9 | 19% |
Researcher | 7 | 15% |
Student > Doctoral Student | 6 | 13% |
Student > Master | 4 | 8% |
Other | 6 | 13% |
Unknown | 6 | 13% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 27 | 56% |
Biochemistry, Genetics and Molecular Biology | 13 | 27% |
Environmental Science | 1 | 2% |
Unknown | 7 | 15% |