Location of Ribosomal Genes in the Chromosomes of Anopheles darlingi and Anopheles nuneztovari (Diptera, Culicidae) from the Brazilian Amazon

• Autor(es): Rafael, Míriam Silva ; Tadei, Wanderli Pedro ; Pimentel, Shirlei Maria Recco
• Data: 2020
• Origem: Oasisbr
• Assunto(s): Anopheles; Anopheles Darlingi; Anopheles Nuneztovari; Centromere; Chromosome C Band; In Situ Hybridization, Fluorescence; Gene Location; Genetic Variability; Heterochromatin; Larva; Nonhuman; Rna Analysis; Rna Gene; Sex Chromosome; Animals; Brasil; Chromosome Map; Chromosome Nor; Female; Gene; Genetics; Anopheles Darlingi; Anopheles Nuneztovari; Culicidae; Diptera; Ribosome Dna; Animal; Anopheles; Brasil; Chromosome Mapping; Ribosomal Dna; Female; Genes, Insect; Heterochromatin; In Situ Hybridization, Fluorescence; Larva; Nucleolus Organizer Region; Sex Chromosomes
• Tipo de Documento: Artigo científico
• Idioma: Inglês

Descrição

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).