نتایج جستجو برای: ploidy level

تعداد نتایج: 1083459  

Journal: :BIO web of conferences 2021

The article presents biochemical characteristics identified during the analysis of metabolomic profiles. object this study was landraces cultivated oat species Avena strigosa Schreb., A. abyssinica Hochst. and sativa L. with different ploidy levels from global collection Department Genetic Resources Oats, Rye, Barley VIR. Metabolic profiling performed using an Agilent 6850 gas chromatograph (Ag...

Journal: :The Journal of heredity 2009
Aleeza C Gerstein Sarah P Otto

Genomes vary dramatically in size and in content. This variation is driven in part by numerous polyploidization events that have happened over the course of eukaryotic evolution. Experimental evolution studies, primarily using the yeast Saccharomyces cerevisiae, provide insights into the immediate fitness effects of ploidy mutations, the ability of organisms of different ploidy levels to mask d...

Journal: :Biology letters 2008
Aleeza C Gerstein Rachel M McBride Sarah P Otto

Large-scale transitions in genome size from tetraploid to diploid were observed during a previous 1800-generation evolution experiment in Saccharomyces cerevisiae. Whether the transitions occurred via a one-step process (tetraploid to diploid) or through multiple steps (through ploidy intermediates) remained unclear. To provide insight into the mechanism involved, we investigated whether triplo...

Journal: :American journal of botany 2007
Jan Suda Hanna Weiss-Schneeweiss Andreas Tribsch Gerald M Schneeweiss Pavel Trávnícek Peter Schönswetter

DNA ploidy levels were estimated using DAPI-flow cytometry of silica-dried specimens of the European mountain plant Senecio carniolicus (Asteraceae), covering its entire distribution area in the Eastern Alps (77 populations, 380 individuals) and the Carpathians (five populations, 22 individuals). A complex pattern of ploidy level variation (2x, 4x, 5x, 6x, and 7x cytotypes) was found in this sp...

Journal: :American journal of botany 2016
Lior Glick Niv Sabath Tia-Lynn Ashman Emma Goldberg Itay Mayrose

PREMISE OF THE STUDY Flowering plants display a variety of sexual systems, ranging from complete cosexuality (hermaphroditism) to separate-sexed individuals (dioecy). While dioecy is relatively rare, it has evolved many times and is present in many plant families. Transitions in sexual systems are hypothesized to be affected by large genomic events such as whole-genome duplication, or polyploid...

Journal: :Acta biochimica Polonica 2008
Joanna Kaminska Edyta Klimczak-Jajor Janusz Skierski Urszula Bany-Laszewicz

alpha1,6-fucosyltransferase (FUT8) attaches fucose residues via an alpha1,6 linkage to the innermost N-acetylglucosamine residue of N-linked glycans. Glycans with this type of structure are present in GpIIb/GpIIIa complex (CD41a) which is present on megakaryocytes (Mks) and platelets. CD41a is the earliest marker of megakaryocytopoiesis. The aim of this study was to analyse the morphology, phen...

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