karyotype evolution
Phylogenetic relationships and karyotype evolution in the sigmodontine rodent Akodon (2n = 10 and 2n = 16) from Brazil
... Comparison of G-bands from 2n = 10 and 2n = 16 karyotypes of Akodon revealed tandem fusions, pericentric inver- sions and Robertsonian rearrangement in autosomes and addition/deletion of constitutive heterochromatin in ...
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Evidence of genetic diff erentiation and karyotype evolution of the sedges Cyperus ligularis L. and C. odoratus L. (Cyperaceae)
... The high degree of chromosome number variation in Cyperaceae members is widely attributed to the occurrence of holokinetic chromosomes in all members of the family, as well as in Juncaceae, its sister group. Thus, the ...
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Evolutionary breakpoints in the gibbon suggest association between cytosine methylation and karyotype evolution.
... Gibbon species have accumulated an unusually high number of chromosomal changes since diverging from the common hominoid ancestor 15–18 million years ago. The cause of this increased rate of chromosomal rearrangements is ...
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Chromosomal Diversity and Karyotype Evolution in South American Macaws (Psittaciformes, Psittacidae).
... Fig 6. Schematic representation of rearrangements involving avian ancestral chromosome 1 (PAK1, homologous to GGA1) in Psittacidae, plotting FISH results in a phylogenetic tree based on mitochondrial and nuclear DNA ...
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Chromosomal characteristics and karyotype evolution of oxyopidae spiders (araneae, entelegynae)
... chromosome evolution resulted in an interspeciic and intraspeciic karyotype variability within the family ...remarkable karyotype differentiation oc- curred in the specimens of ...some ...
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Karyotype characterization and nuclear DNA content measurement in Bromeliaceae: State of the art and future perspectives
... Despite previous cytogenetic and FCM studies, there is scarce data available for bromeliads, limiting inferences about the evolution of its karyotype. In particular, the most cytogenetic studies have only ...
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Karyotype characterization of Crotalaria juncea (L.) by chromosome banding
... The karyotype of ...for karyotype evolution in Crotalaria species have been discussed based on features of chromosome morphology but chromosome banding patterns and map- ping of repetitive DNA ...
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Chromosome evolution in three Brazilian Leptodactylus species (Anura, Leptodactylidae), with phylogenetic considerations
... a karyotype evolution within the former genera Adeno- mera and Lithodytes could be ...ancestral karyotype with 2n 26 and nine telocentric pairs, as exhibited by ...two evolution- ary lineages ...
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Karyotype variability in neotropical catfishes of the family Pimelodidae (Teleostei: Siluriformes)
... the karyotype evolution and conservation of these species (Artoni et ...different karyotype formulae verified for Pseudoplatystoma species (revised in Swarça et ...conservative karyotype ...
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Evidence of separate karyotype evolutionary pathway in Euglossa orchid bees by cytogenetic analyses
... their evolution and chromosomal ...the karyotype evolution of this group, unlike those suggested for social bees and ...ants. Karyotype evolution of solitary bees appears to have ...
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Book Review: The Evidence for Evolution in 100 Pages
... for Evolution, University of Utah anthropologist Alan ...of evolution by natural selection. The Evidence for Evolution appears to be intended for an audience of college-educated individuals who have ...
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Karyotype and nuclear DNA content of Trichomycterus areolatus (Siluriformes, Trichomycteridae)
... Oliveira and Gosztonyi (2000) proposed that the an- cestral karyotype of Siluriformes had 2n = 56. Based on the cytogenetic information available on Ictaluridae at the time, LeGrande (1981) proposed a basal 2n = ...
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Karyotype and genome size analyses in species of Helichrysum (Asteraceae)
... for karyotype data, DNA content and ecological features showed a significant positive correlation between TCL and ploidy level, as well as between the lengths of the long and short arms of the chromosome ...
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Field protocols for the genomic era
... Abstract. For many decades karyotype was the only source of overall genomic in- formation obtained from species of mammal. However, approaches have been de- veloped in recent years to obtain molecular and ...
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Description of a new species and the karyotype of the cavernicolous millipede Pseudonannolene Silvestri and the karyotype of Pseudonannolene strinatti Mauriès (Diplopoda, Pseudonannolenida, Pseudonannolenidae)
... of a total of 10.500 described species have been studied throughouth the world. Also, few researchers have studied the taxonomy of the diplopods species. In Brazil, only Dr.[r] ...
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Combined method for simultaneous morphology, immunophenotype and karyotype (MAC) in leukemias
... 37°C anel thymidine (Sigma) was added (final. concentration= 10- 5 M) for the last 5 hours; GM-culture:[r] ...
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KARYOTYPE ALTERATIONS AFTER HYBRIDIZATION BETWEEN Pennisetum purpureum AND Pennisetum glaucum
... In the case of triploid hybrids of elephant grass and pearl millet, they are somatically stable in respect of chromosome number (Barbosa; Davide; Pereira, 2003), but they have generally lower length of chromosome ...
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Karyotype description and evidence of multiple sex chromosome system X
... Cytogenetic analysis of Potamotrygon aff. motoro and P. falkneri indicated the occurrence of an X 1 X 1 X 2 X 2 /X 1 X 2 Y multiple sex chromosome system in both species, with 2n = 66 chromosomes for females and 2n = 65 ...
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HETEROCHROMATIN PATTERNS AND KARYOTYPE RELATIONSHIPS WITHIN AND BETWEEN THE GENERA
... significant karyotype stability, characterized by the same chromosome number (2n = 50) and great similarity in chromosome struc- ture among ...chromosome evolution of these fishes, and two major patterns of ...
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Genome Size, Karyotype Polymorphism and Chromosomal Evolution in Trypanosoma cruzi
... Studies based on flow cytometry, microfluorometry, chemical and renaturation kinetic analyses have demonstrated variation of up to 40% of the total DNA content among T. cruzi strains and clones [21,22,23,24,25,26,27]. ...
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