...Bárbara L.F. Andrade; Ana Luiza G. Lopes; Gisele A. Teixeira; Mara G. Tavares Introduction: Cytogenetic studies on stingless bees have significantly contributed to our understanding of karyotypic evolution and the composition of euchromatin and heterochromatin regions, including repetitive...

... was to investigate the possible origin of the B chromosomes in T. fiebrigi , a cytotaxonomic trait that differentiates T. fiebrigi from T. angustula . We analyzed diploid chromosome number (2 n ), B chromosome incidence, patterns of constitutive heterochromatin, and in situ localization of different repetitive DNA...

... rDNA sites on submetacentric pair 15. A. grypus has the most divergent chromosomal characteristics because, even though it also has 2n = 56 chromosomes, it exhibits several differences in the chromosome formula, heterochromatin distribution, and number/position of the rDNA sites. In sum, we believe...

...(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Taeniopygia guttata Birds Tandem repeats Satellite DNA Heterochromatin Zebra finch Taeniopygia guttata...

... chromosomes varied (data not shown). C-banding evidenced constitutive heterochromatin blocks in the pericentromeric regions of the A chromosomes, while supernumerary microchromosomes were euchromatic (Fig.  2 , 4 ). Fig. 2. Sequential analysis of mitotic chromosomes in a Moenkhausia oligolepis...

... Pachodynerus species presented the same chromosome number (n = 11 and 2n = 22) but displayed different karyotypic formulae . Additionally, chromosomal polymorphisms were observed in the analysed P. nasidens female. In the 3 species, heterochromatin was located in one of the chromosome arms. Fluorochrome...

... from any ideas, methods, instructions or products referred to in the content or advertisements. Sympatric species (GATA) n (TTAGGG) n Heterochromatin Neotropical region B chromosomes (Bs) are supernumerary chromosomes and represent an extra portion of the chromosomal complement...

..., instructions or products referred to in the content or advertisements. Amphibolurinae Karyotype Chromosomal rearrangement Heterochromatin FISH Original Article Cytogenet Genome Res 2020;160:610 623 DOI: 10.1159/000511344 Received: February 13, 2020 Accepted: September 2, 2020 Published online...

...Denilce M. Lopes; Natália M. Travenzoli; Anderson Fernandes; Lucio A.O. Campos Studies in several organisms have contributed to the understanding of heterochromatin and its biological importance. In bees of the tribe Meliponini, the presence of chromosomes with totally heterochromatic arms has been...

.... Heterochromatin LINE1 Repeat sequences Talpa Y chromosome The genus Talpa (family Talpidae) includes 11 species of fossorial mammals belonging to the order Soricomorpha which is sometimes considered as a suborder of the Eulipotyphla [Hutterer, 2005; Wilson and Reeder, 2005; Nicolas et al., 2015...

... to in the content or advertisements. C-bands G-bands Heterochromatin Insectivora Karyotype rDNA genes Talpa aquitania Talpidae Telomeric sequences Until recently, the genus Talpa (Insectivora; Talpidae) included 9 species of fossorial insectivores [Hutterer, 2005]: T. altaica (Nikolasky...

.... Cytogenetically, the species of the genus Melipona show variation in the amount and distribution of heterochromatin along their chromosomes and can be separated into 2 groups: the first with low content of heterochromatin and the second with high content of heterochromatin. These heterochromatin patterns...

.... The hypermethylated DNA sequences are species-specific and are located in constitutive heterochromatin. They are highly reproducible and often found in centromeric, pericentromeric, and interstitial positions of the chromosomes. Heterochromatic regions in differentiated sex chromosomes are particularly...

... hybridization. We conclude that more work needs to be done to answer questions about the organization of telomeres in this very ancient and thus phylogenetically important insect order. Corduliidae FISH Heterochromatin Karyotype Libellulidae Odonata rDNA (TTAGG) n Ornithological traps...

..., quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Aegilops speltoides Chromosomal rearrangements Heterochromatin Homologous...

.... These ITS signals in Tupaia correspond to fusion points of ancestral human syntenic associations, but are also present in other chromosomes showing synteny to only a single human chromosome. This distribution pattern was compared to that of the heterochromatin regions detected through sequential C-banding...

... responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Agricultural pests Heterochromatin Holocentric chromosomes Repetitive DNAs Telomeres Here, we performed chromosome studies in 6 species...

... includes the differentiation of ZW chromosomes, which involves intense heterochromatinization and accumulation of repetitive DNA in the W sex chromosome [Centofante et al., 2001; Pansonato-Alves et al., 2010, 2011, 2014; Pucci et al., 2014]. Comparative chromosome mapping of repetitive sequences...

... from any ideas, methods, instructions or products referred to in the content or advertisements. Female heterogamety Heterochromatin Microsatellite accumulation Sex chromosome evolution Squamate reptile CGH The Komodo dragon, Varanus komodoensis Ouwens, 1912, is a well-known...

... heterochromatic regions of chromosomes 1, 3, 5, and 9-12 are indicated by filled arrowheads and the NOR by open arrowheads. Anura Euchromatin Evolutionary fixation Intrachromosomal telomeric sequences Heterochromatin In addition to their obligatory location at chromosomal termini...