Results 61 to 70 of about 653 (155)
Dynamic distribution patterns of ribosomal DNA and chromosomal evolution in Paphiopedilum, a lady's slipper orchid [PDF]
Background Paphiopedilum is a horticulturally and ecologically important genus of ca. 80 species of lady's slipper orchids native to Southeast Asia.
Tianying Lan, Victor A Albert
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Heterochromatin heteromorphism in Holhymenia rubiginosa (Heteroptera: Coreidae)
Heterochromatin is one of the most dynamic components in the genome of species. Previous studies on the heterochromatin content and distribution in Heteroptera (insects with holokinetic chromosomes) have shown that the species belonging to the family ...
María José BRESSA +3 more
doaj +1 more source
Advanced microscopic approaches to the study of eukaryotic chromosomes [PDF]
Since the first discoveries of Schneider and Flemming, several papers have been published on chromosome structure making the understanding of chromatin organization in chromosomes one of the most attractive topics of the current biosciences.
BORSATTI, Federica, MANDRIOLI, Mauro
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DNA binding and meiotic chromosomal localization of the drosophila nod kinesin-like protein [PDF]
The Drosophila no distributive disjunction (nod) gene encodes a kinesin-like protein that has been proposed to push chromosomes toward the metaphase plate during female meiosis.
Badve +41 more
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The aim of this study was to obtain information on the karyotypes, testes and ovaries of three fulgoroid families, mainly in the Issidae but also in the Caliscelidae and Acanaloniidae. For the Issidae, the data is for 19 species belonging to 11 genera of
Anna MARYAŃSKA-NADACHOWSKA +3 more
doaj +1 more source
Analysis of insect holocentric chromosomes by atomic force microscopy [PDF]
In order to go in depth into the analysis of holocentric chromosome structure, atomic force microscopy (AFM) was applied to metaphase plates of the aphid Megoura viciae.
MANDRIOLI, Mauro, MANICARDI, Gian Carlo
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Distribution of 45S rDNA sites in chromosomes of plants: Structural and evolutionary implications
Background 45S rDNA sites are the most widely documented chromosomal regions in eukaryotes. The analysis of the distribution of these sites along the chromosome in several genera has suggested some bias in their distribution.
Roa Fernando, Guerra Marcelo
doaj +1 more source
Cicadellidae in one of the best represented families in the Neotropical Region, and the tribe Proconiini comprises most of the xylem-feeding insects, including the majority of the known vectors of xylem-born phytopathogenic organisms. The cytogenetics of
Graciela R de Bigliardo +3 more
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So far, available cytogenetic data on 24 species of Rhopalidae reveal a male diploid chromosome number of 13, with a pair of m chromosomes and an X0/XX (male/female) sex chromosome determining system.
María José BRESSA +3 more
doaj +1 more source
Mediterranean species of the spittlebug genus "Philaenus" : modes of chromosome evolution [PDF]
The evolution of karyotypes and sex determination system of Philaenus Stål (Auchenorrhyncha: Aphrophoridae) species is studied here in detail. The most plausible scenario of chromosomal rearrangements accompanying phylogenetic differentiation in ...
Drosopoulos, Sakis +3 more
core +1 more source

