Chromosome spreading of associated transposable elements and ribosomal DNA in the fish Erythrinus erythrinus. Implications for genome change and karyoevolution in fish
- M. Cioffi, C. Martins, L. A. Bertollo
- BiologyBMC Evolutionary Biology
- 6 September 2010
It is demonstrated that some repetitive DNAs (5S rDNA, Rex3 retroelement and (TTAGGG)n telomeric repeats) were crucial for the evolutionary divergence inside E. erythrinus.
Chromosomal distribution and evolution of repetitive DNAs in fish.
- M. Cioffi, L. Bertollo
- BiologyGenome dynamics
- 25 June 2012
This chapter draws attention to the impact of repetitive DNA sequences on fish karyotyping and genome evolution, with a particular focus on B chromosome origin and maintenance and on the differentiation of sex chromosomes.
Comparative chromosome mapping of repetitive sequences. Implications for genomic evolution in the fish, Hoplias malabaricus
- M. Cioffi, C. Martins, L. A. Bertollo
- BiologyBMC Genetics
- 7 July 2009
The results showed that several chromosomal markers had conserved location in the four karyomorphs, and the mapping pattern of some markers on some autosomes and on the chromosomes of the XY and X1X2Y systems provided new evidence concerning the possible origin of the sex chromosomes.
Chromosomal Variability among Allopatric Populations of Erythrinidae Fish Hoplias malabaricus: Mapping of Three Classes of Repetitive DNAs
- M. Cioffi, C. Martins, L. Centofante, U. Jacobina, L. Bertollo
- BiologyCytogenetic and Genome Research
- 1 August 2009
Despite their inclusion in the same major karyotypic group, the distinct populations of Hoplias malabaricus cannot be considered an absolute evolutionary unit, as evidenced by their inner chromosomal differentiations.
Initial steps in XY chromosome differentiation in Hoplias malabaricus and the origin of an X1X2Y sex chromosome system in this fish group
- M. Cioffi, L. Bertollo
- BiologyHeredity
- 1 December 2010
This study shows the initial steps in XY chromosome differentiation in H. malabaricus and contributes to the understanding of the evolutionary pathway leading to a multiple X1X2Y sex chromosome system in fishes.
The Chromosomal Distribution of Microsatellite Repeats in the Genome of the Wolf Fish Hoplias malabaricus, Focusing on the Sex Chromosomes
- M. Cioffi, E. Kejnovský, L. Bertollo
- BiologyCytogenetic and Genome Research
- 20 November 2010
The findings are likely in agreement with models that predict the accumulation of repetitive DNA sequences in regions with very low recombination, however in contrast with what was observed in multiple systems, where such a reduction might be facilitated by the chromosomal rearrangements that are directly associated with the origin of these systems.
Genomic Organization of Repetitive DNA Elements and Its Implications for the Chromosomal Evolution of Channid Fishes (Actinopterygii, Perciformes)
- M. Cioffi, L. Bertollo, A. Chaveerach
- Biology, Environmental SciencePLoS ONE
- 12 June 2015
The karyotypic features highlight the biodiversity of the channid fishes and justify a taxonomic revision of the genus Channa, as well as of the Channidae family as a whole, as some nominal species may actually constitute species complexes.
The contrasting role of heterochromatin in the differentiation of sex chromosomes: an overview from Neotropical fishes.
- M. Cioffi, O. Moreira-Filho, L. Almeida-Toledo, L. Bertollo
- BiologyJournal of Fish Biology
- 1 May 2012
In this review, attention has been drawn to the contrasting role of heterochromatin in the differentiation of simple and multiple sex chromosomes of Neotropical fishes, highlighting their surprising evolutionary dynamism.
The Evolutionary Dynamics of Ribosomal Genes, Histone H3, and Transposable Rex Elements in the Genome of Atlantic Snappers.
- G. Costa, M. Cioffi, L. Bertollo, W. F. Molina
- BiologyJournal of Heredity
- 1 March 2016
The low compartmentalization of Rex elements, in addition to the general nondynamic distribution of ribosomal and H3 genes, corroborate the karyotype conservatism in Lutjanidae species, also at the microstructural level, as evidenced by the massive random dispersion of H3 hisDNA in the genome of O. chrysurus.
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