Results 21 to 30 of about 87,114 (318)

A Target Capture-Based Method to Estimate Ploidy From Herbarium Specimens

open access: yesFrontiers in Plant Science, 2019
Whole genome duplication (WGD) events are common in many plant lineages, but the ploidy status and possible occurrence of intraspecific ploidy variation are unknown for most species.
Juan Viruel   +16 more
doaj   +1 more source

Transition from somatic embryo to friable embryogenic callus in cassava: Dynamic changes in cellular structure, physiological status, and gene expression profiles

open access: yesFrontiers in Plant Science, 2015
Friable embryogenic callus (FEC) is considered as the most suitable material for efficient genetic transformation of cassava. Heavy genotype dependence of FEC induction and amenability to somaclonal variation limits the production and maintenance of ...
Qiuxiang eMa, Wenzhi eZhou, Peng eZhang
doaj   +1 more source

DNA content analysis of colorectal cancer defines a distinct ‘microsatellite and chromosome stable’ group but does not predict response to radiotherapy [PDF]

open access: yes, 2014
Colorectal cancers (CRC) are thought to have genetic instability in the form of either microsatellite instability (MSI) or chromosomal instability (CIN).
Abdel-Rahman   +44 more
core   +2 more sources

Human megakaryocyte ploidy.

open access: yesHistology and histopathology, 1999
We reviewed the literature concerning the history of determination of the ploidy of human megakaryocytes and its relationship with diseases. The ploidy of rabbit megakaryocytes was analyzed by microspectrophotometry in 1964, and the analysis of the ploidy in human megakaryocytes was first performed in 1968. Presently, microphotometry and flow cytometry
Kobayashi, Y., Kondo, M.
openaire   +3 more sources

Gender and ploidy in cancer survival [PDF]

open access: yesCellular Oncology, 2011
Females carry a better prognosis than men for many cancer types. We hypothesized that chromosomal changes, in particular numerical alterations of the sex chromosomes or the presence of near-triploidy may contribute to these gender differences.To characterize the influence of gender a literature search was performed for survival data of 27 tumor types ...
Susanne Schulze, Iver Petersen
openaire   +2 more sources

Hybridization between wild and cultivated potato species in the Peruvian Andes and biosafety implications for deployment of GM potatoes [PDF]

open access: yes, 2008
The nature and extent of past and current hybridization between cultivated potato and wild relatives in nature is of interest to crop evolutionists, taxonomists, breeders and recently to molecular biologists because of the possibilities of inverse gene ...
Celis Gamboa, B.C.   +4 more
core   +4 more sources

Potential Population Genetic Consequences of Habitat Fragmentation in Central European Forest Trees and Associated Understorey Species—An Introductory Survey

open access: yesDiversity, 2017
Habitat fragmentation threatens the maintenance of genetic diversity of affected populations. Assessment of the risks associated with habitat fragmentation is a big challenge as the change in population genetic diversity is a dynamic process, often ...
Christoph Dobeš   +2 more
doaj   +1 more source

A Survey of Verbena xutha Lehm. (Gulf Vervain) Morphological and Cytological Characteristics

open access: yesHortScience, 2023
Gulf vervain (Verbena xutha) is a herbaceous perennial native to the southern United States. The species produces attractive spike inflorescences that provide a source of food for many pollinators. Besides botanical classifications, pollen morphology and
S. Brooks Parrish   +4 more
doaj   +1 more source

The plant-specific cyclin-dependent kinase CDKB1;1 and transcription factor E2Fa-DPa control the balance of mitotically dividing and endoreduplicating cells in Arabidopsis [PDF]

open access: yes, 2004
Transgenic Arabidopsis thaliana plants overproducing the E2Fa-DPa transcription factor have two distinct cell-specific phenotypes: some cells divide ectopically and others are stimulated to endocycle.
Beemster, Gerrit   +8 more
core   +3 more sources

p53: Guardian of ploidy

open access: yesMolecular Oncology, 2011
AbstractAneuploidy, often preceded by tetraploidy, is one of the hallmarks of solid tumors. Indeed, both aneuploidy and tetraploidy are oncogenic occurrences that are sufficient to drive neoplastic transformation and cancer progression. True to form, the tumor suppressor p53 obstructs propagation of these dangerous chromosomal events by either ...
Yael Aylon, Moshe Oren
openaire   +4 more sources

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