Made available in DSpace on 2022-04-29T09:12:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-12-01; Decades before the recent advances in molecular biology and the knowledge of the complete nucleotide sequence of several genomes, cytogenetic analysis provided the first information concerning the genome organization. The exploration of molecular biology techniques in the cytogenetic area represents a p...
Made available in DSpace on 2022-04-29T08:41:21Z (GMT). No. of bitstreams: 0 Previous issue date: 2022-06-05; In association with many proteins, small nuclear RNAs (snRNAs) organize the spliceosomes that play a significant role in processing precursor mRNAs during gene expression. According to snRNAs genic arrangements, two kinds of spliceosomes (major and minor) can be organized into eukaryotic cells. Although...
Made available in DSpace on 2022-04-28T20:42:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-01-01; Actin-encoding cDNAs of Nile tilapia (Oreochromis niloticus) were isolated by RT-PCR using total RNA samples of different tissues and further characterized by nucleotide sequencing and in silico amino acid (aa) sequence analysis. Comparisons among the actin gene sequences of O. niloticus and those of ot...
Made available in DSpace on 2021-06-25T11:00:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-12-01; Background: B chromosomes (Bs) are extra elements observed in diverse eukaryotes, including animals, plants and fungi. Although Bs were first identified a century ago and have been studied in hundreds of species, their biology is still enigmatic. Recent advances in omics and big data technologies are re...
Made available in DSpace on 2021-06-25T11:04:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-09-23; Background: One of the biggest challenges in chromosome biology is to understand the occurrence and complex genetics of the extra, non-essential karyotype elements, commonly known as supernumerary or B chromosomes (Bs). The non-Mendelian inheritance and non-pairing abilities of B chromosomes make them a...
Made available in DSpace on 2021-06-25T11:04:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Heterozygous chromosomal rearrangements can result in failures during the meiotic cycle and the apoptosis of germline, making carrier individuals infertile. The Amazon frog Leptodactylus pentadactylus has a meiotic multivalent, compos...
Made available in DSpace on 2020-12-10T19:55:10Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-15; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); National Bank for Economic and Social Development - BNDES; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); The wide variation found in the size of eukaryotic genomes is largely related to the accumulation of repet...
Made available in DSpace on 2020-12-10T19:40:32Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-12-01; Fundacao Araucaria (Fundacao Araucaria de Apoio ao Desenvolvimento Cientifico e Tecnologico do Estado do Parana); Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológ...
Made available in DSpace on 2020-12-12T02:17:04Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-22; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Nile tilapia is the third most cultivated fish worldwide and a novel model species for evolutionary studies. Aiming to improve productivity and contribute to the selection of traits of economic impact, biotechnological approaches have been i...
Made available in DSpace on 2020-12-12T02:28:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01; The 35S and 5S ribosomal DNA (rDNA) organized in thousands of copies in genomes, have been widely used in numerous comparative cytogenetic studies. Nevertheless, several questions related to the diversity and organization of regulatory motifs in 5S rDNA remain to be addressed. The 5S rDNA unit is compos...