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Chromosome mapping of ribosomal genes and histone H4 in the genus Radacridium (Romaleidae)
Provedor de dados: 74
Autores: Anjos,Allison; Loreto,Vilma; Souza,Maria José de.
In this study, two species of Romaleidae grasshoppers, Radacridium mariajoseae and R.nordestinum, were analyzed after CMA3/DA/DAPI sequential staining and fluorescence in situ hybridization (FISH) to determine the location of the 18S and 5S rDNA and histone H4 genes. Both species presented karyotypes composed of 2n = 23, X0 with exclusively acrocentric chromosomes. CMA3+ blocks were detected after CMA3/DA/DAPI staining in only one medium size autosome bivalent and in the X chromosome in R. mariajoseae. On the other hand, all chromosomes, except the L1 bivalent, of R. nordestinum presented CMA3+ blocks. FISH analysis showed that the 18S genes are restricted to the X chromosome in R. mariajoseae, whereas these genes were located in the L2,S9 and S10...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytogenetics; FISH; Fluorochromes; Grasshoppers; RDNA.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000300006