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Repetitive DNAs in Melipona scutellaris (Hymenoptera: Apidae: Meliponidae): chromosomal distribution and test of multiple heterochromatin amplification in the genus
(2018-08-01)
Melipona bees are remarkable due to the high contrast in heterochromatin amounts, making this group interesting for studying repetitive DNA amplification. Here, we performed the first efforts for the chromosomal localization ...
Similarity of heterochromatic regions in the stingless bees (Hymenoptera: Meliponini) revealed by chromosome painting
(Univ Florence Botany Inst, 2014-09-01)
Most Meliponini share a distinctive pattern of heterochromatin distribution in relation to other bees. In general, they present one euchromatic and one heterochromatic chromosome arm, a feature explained by minimum interaction ...
Heterochromatin and molecular characterization of DsmarMITE transposable element in the beetle Dichotomius schiffleri (Coleoptera: Scarabaeidae)
(Springer, 2014-12-01)
Cytogenetic studies of the Neotropical beetle genus Dichotomius (Scarabaeinae, Coleoptera) have shown dynamism for centromeric constitutive heterochromatin sequences. In the present work we studied the chromosomes and ...
Evolutionary dynamics of heterochromatin in the genome of Dichotomius beetles based on chromosomal analysis
(Springer, 2011-03-01)
We comparatively analyzed six Dichotomius species (Coleoptera: Scarabainae) through cytogenetic methods and mitochondrial genes sequencing in the aim to identify patterns of chromosomal evolution and heterochromatin ...
Evolutionary dynamics of heterochromatin in the genome of Dichotomius beetles based on chromosomal analysis
(Springer, 2011-03-01)
We comparatively analyzed six Dichotomius species (Coleoptera: Scarabainae) through cytogenetic methods and mitochondrial genes sequencing in the aim to identify patterns of chromosomal evolution and heterochromatin ...
The extensive amplification of heterochromatin in Melipona bees revealed by high throughput genomic and chromosomal analysis
(2021-01-01)
Satellite DNAs (satDNAs) and transposable elements (TEs) are among the main components of constitutive heterochromatin (c-heterochromatin) and are related to their functionality, dynamics, and evolution. A peculiar case ...
Spatial Distribution of Heterochromatin Bodies in the Nuclei of Triatoma infestans (Klug)
(2020-06-01)
Constitutive heterochromatin typically exhibits low gene density and is commonly found adjacent or close to the nuclear periphery, in contrast to transcriptionally active genes concentrated in the innermost nuclear region. ...
Cytogenetics of Melitoma segmentaria (Fabricius, 1804) (Hymenoptera, Apidae) reveals differences in the characteristics of heterochromatin in bees
(Cytogenetic and Genome Research, 2017)
Cytogenetic studies in four cultivated Amaranthus (Amaranthaceae) species
(Pensoft Publishers, 2013-03-26)
In the present study, the chromosomes numbers were confirmed, 2n = 34 for Amaranthus cruentus Linnaeus, 1759, and 2n = 32 for A. hypochondriacus Linnaeus, 1753, A. mantegazzianus Passer, 1864, and A. caudatus Linnaeus, ...
Heterochromatin variation in Oziroë argentinensis (Hyacinthaceae) revealed by florescent banding
(Univ Florence Botany Inst, 2006-01)
Previous studies in Oziroë argentinensis (Lillo et Hauman) Speta, have showed variation of heterochromatic regions between and within different populations of the species. In this study, were examined the heterochromatic ...