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dc.contributor.authorKretschmer, Rafaelpt_BR
dc.contributor.authorOliveira, Thays Duarte dept_BR
dc.contributor.authorFuro, Ivanete de Oliveirapt_BR
dc.contributor.authorSilva, Fabio Augusto Oliveirapt_BR
dc.contributor.authorGunski, Ricardo Josépt_BR
dc.contributor.authorGarnero, Analía del Vallept_BR
dc.contributor.authorCioffi, Marcelo de Bellopt_BR
dc.contributor.authorOliveira, Edivaldo Herculano Corrêapt_BR
dc.contributor.authorFreitas, Thales Renato Ochotorena dept_BR
dc.date.accessioned2023-11-30T03:24:23Zpt_BR
dc.date.issued2018pt_BR
dc.identifier.issn1415-4757pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/267843pt_BR
dc.description.abstractAn extensive karyotype variation is found among species belonging to the Columbidae family of birds (Columbiformes), both in diploid number and chromosomal morphology. Although clusters of repetitive DNA sequences play an important role in chromosomal instability, and therefore in chromosomal rearrangements, little is known about their distribution and amount in avian genomes. The aim of this study was to analyze the distribution of 11 distinct microsatellite sequences, as well as clusters of 18S rDNA, in nine different Columbidae species, correlating their distribution with the occurrence of chromosomal rearrangements. We found 2n values ranging from 76 to 86 and nine out of 11 microsatellite sequences showed distinct hybridization signals among the analyzed species. The accumulation of microsatellite repeats was found preferentially in the centromeric region of macro and microchromosomes, and in the W chromosome. Additionally, pair 2 showed the accumulation of several microsatellites in different combinations and locations in the distinct species, suggesting the occurrence of intrachromosomal rearrangements, as well as a possible fission of this pair in Geotrygon species. Therefore, although birds have a smaller amount of repetitive sequences when compared to other Tetrapoda, these seem to play an important role in the karyotype evolution of these species.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofGenetics and molecular biology. Ribeirão Preto. Vol. 41, no. 1 (Marc. 2018), p. 98-106pt_BR
dc.rightsOpen Accessen
dc.subjectDNApt_BR
dc.subjectBirdsen
dc.subjectMicrosatellitesen
dc.subjectColumbidaept_BR
dc.subjectCromossomos sexuaispt_BR
dc.subjectSex chromosomesen
dc.subjectChromosomal rearrangements.en
dc.subjectHibridização in situ fluorescentept_BR
dc.titleRepetitive DNAs and shrink genomes: a chromosomal analysis in nine Columbidae species (Aves, Columbiformes)pt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001103402pt_BR
dc.type.originNacionalpt_BR


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