Location of ribosomal genes in the chromosomes of Anopheles darlingi and Anopheles nuneztovari (Diptera, Culicidae) from the Brazilian Amazon.
Fluorescence in situ hybridization of Anopheles darlingi and A. nuneztovari demonstrated nucleolar organizer region activity at the end of the fourth larval instar, when the nucleolar organizer regions underwent gradual condensation. The heteromorphic sex chromosomes showed intraindividual size variation in the rDNA blocks located in the pericentromeric region and this coincided with the location of constitutive heterochromatin (C-banding).
Rafael
Míriam Silva
MS
Coordena o de Pesquisas em Ciências da Saúde, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil. mdrafael@inpa.gov.br
Tadei
Wanderli Pedro
WP
Recco-Pimentel
Shirlei Maria
SM
D000818:Animals; D000852:Anopheles / Q000235:genetics*; D001938:Brazil; D002874:Chromosome Mapping; D004275:DNA, Ribosomal / Q000032:analysis*; D005260:Female; D017344:Genes, Insect / Q000235:genetics*; D006570:Heterochromatin / Q000235:genetics; D017404:In Situ Hybridization, Fluorescence; D007814:Larva / Q000235:genetics; D009697:Nucleolus Organizer Region / Q000235:genetics; D012730:Sex Chromosomes / Q000235:genetics
D004275:DNA, Ribosomal; D006570:Heterochromatin