Karyotyping, or visually examining and recording chromosomal abnormalities, is commonly used to diagnose and treat disease. Karyotypes are written in the International System for Human Cytogenetic Nomenclature (ISCN), a computationally non-readable language that precludes full analysis of these genomic data. In response, we developed a cytogenetic platform that transfers the ISCN karyotypes to ...

The thirteen species of Phaneropterinae here studied can be arranged in four different groups according to their basic karyological traits. All of them share the same kind of chromosomal sex determining mechanism with X0♂ and XX♀. The X chromosome differs among species and always appears heteropycnotic during prophase I, it is the largest in the set and segregates precociously during anaphase I...

Recent phylogenetic and molecular data are changing our knowledge about the relations between species evolutionary processes resulting in chromosome variation observed ants (Hymenoptera: Formicidae). Ants exhibit remarkable variations morphology, behavior, karyotypes, structure. By assembling genetic information trap-jaw from subfamily Ponerinae, we reconstructed relationships that inferred mon...

An enzymatic maceration and Giemsa staining method was used to compare the karyotypes of Crotalaria laburnifolia (trifoliate) C. spectabilis (simple leaves) species belonging distinct morphological sections with different degrees floral specialization. Both taxa share a 2n=16, asymmetric chromosome complement, relatively similar karyotypic formulae. However, differences in chromosome-SAT, sizes...

Critically short telomeres promote chromosomal fusions, which in TP53-defective cells initiate the formation of cytogenetic aberrations that are typical of human cancer cells. Expression of the enzyme telomerase stabilizes normal and aberrant chromosomes by maintaining telomere length. However, previous investigations, including our own, have shown that overexpression of telomerase reverse tran...