Cytotaxonomy and karyology of the tribe Otiorhynchini (Coleoptera: Curculionidae)
European Journal of Entomology, 2008 A cytogenetic study of bisexual species belonging to the genera Cirrorhynchus, Dodecastichus and Otiorhynchus is presented in order to confirm their taxonomic position. The karyotype characterization was accomplished by an analysis of mitotic and meiotic
Dorota LACHOWSKA +2 more
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Ornithogalum insulare (Hyacinthaceae): A new species from the Cretan area (S. Aegean, Greece) [PDF]
Botanica Serbica, 2018 Ornithogalum insulare collected from three offshore islets of Crete is described as a species new to science. It is illustrated and compared with other related species of the genus. Information regarding its chromosome number (2n = 44) and karyotype is
Zacharias Kypriotakis +2 more
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Assortativity in sympatric speciation and species classification [PDF]
Physica A 653 (2024) 130111We investigate the role of assortative mating in speciation using the sympatric model of Derrida and Higgs. The model explores the idea that genetic differences create incompatibilities between individuals, preventing mating if the number of such differences is too large. Speciation, however, only happens in this mating system if the number of genes is
arxiv +1 more source
Chromosome number and satellited chromosome morphology of eleven species of Arachis (Leguminosae)
Bonplandia, 2005 The chromosome number was determined in eleven recently-described species of Arachís belonging to five different axonomic sections. Two new species of section Arachís, A. Gregoryí and A.
Andréa del Pilar De Souza Penaloza +1 more
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Intermittency as a universal characteristic of the complete chromosome DNA sequences of eukaryotes: From protozoa to human genomes [PDF]
, 2011 Large-scale dynamical properties of complete chromosome DNA sequences of eukaryotes are considered. By the proposed deterministic models with intermittency and symbolic dynamics we describe a wide spectrum of large-scale patterns inherent in these sequences, such as segmental duplications, tandem repeats, and other complex sequence structures.
arxiv +1 more source
Men Can't Always be Transformed into Mice: Decision Algorithms and Complexity for Sorting by Symmetric Reversals [PDF]
arXiv, 2023 Sorting a permutation by reversals is a famous problem in genome rearrangements. Since 1997, quite some biological evidence were found that in many genomes the reversed regions are usually flanked by a pair of inverted repeats. This type of reversals are called symmetric reversals, which, unfortunately, were largely ignored until recently.
arxiv
The parameters of Menzerath-Altmann law in genomes [PDF]
, 2012 The relationship between the size of the whole and the size of the parts in language and music is known to follow Menzerath-Altmann law at many levels of description (morphemes, words, sentences...). Qualitatively, the law states that larger the whole, the smaller its parts, e.g., the longer a word (in syllables) the shorter its syllables (in letters ...
arxiv +1 more source
Cytogenetic study and pollen viability of three populations of Diplotaxis harra (Brassicaceae) in Iran [PDF]
Journal of Cell and Molecular Research, 2014 In this study, we examined the chromosome number, detailed male meiosis, microsporogenesis, pollen fertility and distribution of cytotypes of Diplotaxis harra (Forssk.) Boiss. This is the first cytogenetic report of the taxon.
Massoud Ranjbar, Somayeh Karami
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On the Order of Gene Distribution on Chromosomes Across the Animal Kingdom [PDF]
arXiv, 2019 Background. The large-scale pattern of distribution of genes on the chromosomes in the known animal genomes is not well characterized. We hypothesized that individual genes will be distributed on chromosomes in a mathematically ordered manner across the animal kingdom. Results.
arxiv
MEIOSIS: HOW TO HALVE THE CHROMOSOME NUMBER
Вавиловский журнал генетики и селекции, 2014 The notion of meiosis has been changed and refined for over a century since the discovery of this complicated way of cell division. Its success depends on precise time and space orchestration of many processes, such as chromosome replication, packaging ...
A. A. Torgasheva
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