A small B chromosome in the grasshopper Ommexecha virens(Ommexechidae)

B chromosomes, also called supernumerary or accessory chromosomes, have been characterized as extra elements found in the karyotypes of different eukaryotic species. B chromosomes are nonvital and only occur in some individuals within a species. Moreover, the chromosomes contain silenced genes, and...

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Published inGenetics and molecular research Vol. 14; no. 4; pp. 17505 - 17510
Main Authors Souza, T E, Silva-Neto, L C, Santos, J F, Loreto, V, Rieger, T T
Format Journal Article
LanguageEnglish
Published 01.01.2015
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Summary:B chromosomes, also called supernumerary or accessory chromosomes, have been characterized as extra elements found in the karyotypes of different eukaryotic species. B chromosomes are nonvital and only occur in some individuals within a species. Moreover, the chromosomes contain silenced genes, and they exhibit heterochromatinization and the accumulation of repetitive DNA and transposons. In the present study, we describe an extra chromosome in the grasshopper Ommexecha virens for the first time, using conventional staining and fluorescent in situ hybridization techniques, and we discuss the possible origin of the B chromosome.
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ISSN:1676-5680
1676-5680
DOI:10.4238/2015.December.21.22