New evidence for nucleolar dominance in hybrids of Drosophila arizonae and Drosophila mulleri

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorOliveira, C. I.
dc.creatorBicudo, H. E M C
dc.creatorItoyama, M. M.
dc.date2014-05-27T11:22:21Z
dc.date2016-10-25T18:23:23Z
dc.date2014-05-27T11:22:21Z
dc.date2016-10-25T18:23:23Z
dc.date2006-12-18
dc.date.accessioned2017-04-06T01:23:05Z
dc.date.available2017-04-06T01:23:05Z
dc.identifierGenetics and Molecular Research, v. 5, n. 4, p. 632-637, 2006.
dc.identifier1676-5680
dc.identifierhttp://hdl.handle.net/11449/69428
dc.identifierhttp://acervodigital.unesp.br/handle/11449/69428
dc.identifierWOS:000203012000006
dc.identifier2-s2.0-33845468211.pdf
dc.identifier2-s2.0-33845468211
dc.identifierhttp://www.geneticsmr.com//year2006/vol5-4/pdf/gmr0225.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/890678
dc.descriptionDrosophila mulleri (MU) and D. arizonae (AR) are cryptic species of the mulleri complex, mulleri subgroup, repleta group. Earlier cytogenetic studies revealed that these species have different regulatory mechanisms of nucleolar organizing activity. In these species, nucleolar organizing regions are found in both the X chromosome and the microchromosome. In the salivary glands of hybrids between MU females and AR males, there is an interspecific dominance of the regulatory system of the D. arizonae nucleolar organizer involving, in males, amplification and activation of the nucleolar organizer from the microchromosome. The authors who reported these findings obtained hybrids only in that cross-direction. More recently, hybrids in the opposite direction, i.e., between MU males and AR females, have been obtained. The purpose of the present study was to evaluate, in these hybrids, the association of the nucleoli with the chromosomes inherited from parental species in order to cytogenetically confirm the dominance patterns previously described. Our results support the proposed dominance of the AR nucleolar organizer activity over that of MU, regardless of cross-direction. ©FUNPEC-RP.
dc.languageeng
dc.relationGenetics and Molecular Research
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectDrosophila
dc.subjectMicrochromosome
dc.subjectNucleolar dominance
dc.subjectNucleolus
dc.subjectPolytene chromosome
dc.subjectanimal cell
dc.subjectanimal experiment
dc.subjectautosomal dominant inheritance
dc.subjectchromosome analysis
dc.subjectchromosome NOR
dc.subjectcontrolled study
dc.subjectcytogenetics
dc.subjectdominant inheritance
dc.subjectDrosophila arizonae
dc.subjectDrosophila mulleri
dc.subjectfemale
dc.subjectgene activation
dc.subjectgene amplification
dc.subjectgenetic association
dc.subjecthybrid
dc.subjectmale
dc.subjectmicrochromosome
dc.subjectnonhuman
dc.subjectnucleolus
dc.subjectpolytene chromosome
dc.subjectregulatory mechanism
dc.subjectsalivary gland
dc.subjectX chromosome
dc.subjectAnimals
dc.subjectCell Nucleolus
dc.subjectCrosses, Genetic
dc.subjectFemale
dc.subjectGenetic Variation
dc.subjectHybridization, Genetic
dc.subjectInheritance Patterns
dc.subjectMale
dc.subjectNucleolus Organizer Region
dc.subjectX Chromosome
dc.subjectmulleri subgroup
dc.subjectrepleta group
dc.titleNew evidence for nucleolar dominance in hybrids of Drosophila arizonae and Drosophila mulleri
dc.typeOtro


Este ítem pertenece a la siguiente institución