Results 41 to 50 of about 21,142 (275)
Phylogenetic relationships in Betula (Betulaceae) based on AFLP markers [PDF]
, 2008 The genus Betula comprises various species in boreal and temperate climate zones of the Northern Hemisphere. The taxonomy of Betula is controversial and complicated by parallel evolution of morphological traits, polyploidization events, and extensive ...
Gilissen, L.J.W.J. +4 more
core +2 more sources
Chromosome Stability of Synthetic-Natural Wheat Hybrids
Frontiers in Plant Science, 2021 Primary allopolyploids are not only ideal materials to study species evolution, but also important bridges in incorporating genetic diversity of wild species into crops.
Laibin Zhao +12 more
doaj +1 more source
Loss of redundant gene expression after polyploidization in plants
, 1978 Based on chromosomal location data of genes encoding 28 biochemical systems in allohexaploid wheat,Triticum aestivum L. (genomes AABBDD), it is concluded that the proportions of systems controlled by triplicate, duplicate, and single loci are 57%, 25 ...
C. Aragoncillo +20 more
core +1 more source
Polyploidization and epigenetics [PDF]
Chinese Science Bulletin, 2011 The occurrence of polyploidy, or whole genome duplication, can result in instantaneous speciation. Because new polyploids are immediately reproductively isolated from their non-polyploid congeners, polyploidization has played an important role in the diversification of flowering plants and some vertebrates.
Li, ZhiHui +8 more
openaire +1 more source
FISH-aimed karyotype analysis in Aconitum subgen : aconitum reveals excessive rDNA sites in tetraploid taxa [PDF]
, 2018 The location of 5S and 35S rDNA sequences in chromosomes of four Aconitum subsp. Aconitum species was analyzed after fluorescence in situ hybridization (FISH). Both in diploids (2n = 2x = 16; Aconitum variegatum, A. degenii) and tetraploids (2n = 4× = 32;
Grabowska-Joachimiak, Aleksandra +4 more
core +2 more sources
British Journal of Haematology, EarlyView.Summary Immune thrombocytopenia (ITP) is a complex autoimmune disorder characterized by accelerated destruction of peripheral platelets and impaired megakaryopoiesis. While the cellular effectors, dysregulated T cells, hyperactive B cells and phagocytic macrophages are well characterized, the upstream epigenetic mechanisms orchestrating this ...
Zhenyu Liu +8 more
wiley +1 more source
CENH3-GFP: a visual marker for gametophytic and somatic ploidy determination in Arabidopsis thaliana [PDF]
, 2016 Background: The in vivo determination of the cell-specific chromosome number provides a valuable tool in several aspects of plant research. However, current techniques to determine the endosystemic ploidy level do not allow non-destructive, cell-specific
Angenon, Geert +4 more
core +5 more sources
Mechanisms of Thrombocytosis in Iron‐Deficiency Anemia
European Journal of Haematology, EarlyView.ABSTRACT Iron‐deficiency anemia is frequently accompanied by reactive thrombocytosis, yet the mechanisms underlying this association remain incompletely understood. Beyond impaired erythropoiesis, iron availability has emerged as an active regulator of hematopoietic lineage decisions.
João Vitor Facco +2 more
wiley +1 more source
Polo-like kinase 4 controls centriole duplication but does not directly regulate cytokinesis. [PDF]
, 2012 Centrioles organize the centrosome, and accurate control of their number is critical for the maintenance of genomic integrity. Centrioles duplicate once per cell cycle, and duplication is coordinated by Polo-like kinase 4 (Plk4).
Bettencourt-Dias, Monica +10 more
core +4 more sources
Diagnostic yield of OCT3/4 reflex testing in testicular biopsy
Histopathology, EarlyView.GCNIS detection frequency was 48/3353 (1.4%) testicular biopsies from 42/1870 (2.2%) men who underwent testicular biopsy with or without testicular sperm extraction (TESE). OCT3/4 was particularly helpful for detecting interstitial seminoma, GCNIS coexisting with mature spermatogenesis, and focal GCNIS.
Roselyne Choiniere +2 more
wiley +1 more source