Results 291 to 300 of about 64,688 (330)
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The population genetics of ploidy change in unicellular fungi.
FEMS Microbiology Reviews, 2021Changes in ploidy are a significant type of genetic variation, describing the number of chromosome sets per cell. Ploidy evolves in natural populations, clinical populations, and lab experiments, particularly in fungi.
A. Gerstein, Nathaniel P. Sharp
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Cytokinesis, ploidy and aneuploidy
The Journal of Pathology, 2011AbstractCytokinesis is the last step of cell division that physically separates the daughter cells. As such, it ensures the proper inheritance of both nuclear and cytoplasmic contents. Accomplishment of cytokinesis in eukaryotes is dictated by several key events: establishment of the division plane, furrow ingression through contraction of an ...
Benjamin Lacroix, Amy Shaub Maddox
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The determination of megakaryocyte ploidy
The International Journal of Cell Cloning, 1990Methods which have been used to determine megakaryocyte ploidy in animals and humans are reviewed. Although the number of megakaryocyte nuclear units counted in bone marrow squashes is roughly proportional to ploidy, accurate determinations of DNA content require the use of microphotometry or flow cytometry.
J. M. Senterre +2 more
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Cytology, Ploidy and Ploidy Manipulation
2016The genus Actinidia is remarkable for the variation in ploidy both within and between taxa. There is a structured reticulate pattern of diploids, tetraploids, hexaploids, octoploids and decaploids in diminishing frequency within the genus. The basic chromosome number x = 29 suggests that diploids of Actinidia are in fact palaeopolyploids.
Hongwen Huang, Allan Ross Ferguson
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Molecular Ecology, 2012
Inferences of whole genome duplication (WGD) events accompany the annotation of every newly sequenced plant genome, but much remains unknown about the evolutionary processes and pathways relating to WGD (Soltis et al. 2010). What ecological, biogeographical and genetic factors cause WGD to occur in nature? How does WGD affect gene expression?
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Inferences of whole genome duplication (WGD) events accompany the annotation of every newly sequenced plant genome, but much remains unknown about the evolutionary processes and pathways relating to WGD (Soltis et al. 2010). What ecological, biogeographical and genetic factors cause WGD to occur in nature? How does WGD affect gene expression?
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The effect of cytokines on the ploidy of megakaryocytes
The International Journal of Cell Cloning, 1990The effects of recombinant cytokines on the ploidy of human megakaryocytes derived from megakaryocyte progenitors were studied using serum-free agar cultures. Nonadherent and T cell-depleted marrow cells were cultured for 14 days. Megakaryocyte colonies were identified in situ by the alkaline phosphatase anti-alkaline phosphatase technique, using ...
Masanao Teramura, H. Mizoguchi
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Ploidy in the hearts of elderly patients
Virchows Archiv B Cell Pathology Including Molecular Pathology, 1982The DNA-ploidy of the left and right ventricular wall in 48 patients aged 80-98 years was investigated by scanning cytophotometry. The great variation in nuclear ploidy previously described in the heart muscle was shown to persist during the ninth decade.
Bernd Rosenberg, Peter Pfitzer
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Ploidy differences in Cryptococcus albidus [PDF]
Mycopathologia et Mycologia Applicata, 1970 Presumed haploid and diploid cultures ofCryptococcus albidus were analysed for their DNA content per cell. A ratio of approximately 1:2 was obtained by relating the DNA content per cell of the two phases to ploidy. As the diplophase formed neither longitudinally septated cells nor ballistoconidia, the earlier suggestions thatCryptococcus is closely ...
Janie de Leeuw, J. P. van der Walt
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Significance of ploidy in laryngeal cancer
The American Journal of Surgery, 1986We studied 48 patients with laryngeal or hypopharyngeal primary tumors with DNA flow cytometry. Twenty-four of the tumors were glottic, 18 were supraglottic, and 6 were from the pyriform sinus. Patients were followed for a minimum of 12 months, with a mean follow-up of 23 months. Twenty-three of the 48 primary tumors (48 percent) were clearly aneuploid,
Harold C. Pillsbury +4 more
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Pathology, 1988
DNA ploidy in benign nevi (BN), thin non-metastasizing melanomas (TNM) and thin metastasizing melanomas (TMM) was investigated using an image analyser to determine whether characteristics such as nuclear area (NA) and nuclear integrated optical density (IOD) could be used to distinguish between these lesions.
L. Francis +5 more
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DNA ploidy in benign nevi (BN), thin non-metastasizing melanomas (TNM) and thin metastasizing melanomas (TMM) was investigated using an image analyser to determine whether characteristics such as nuclear area (NA) and nuclear integrated optical density (IOD) could be used to distinguish between these lesions.
L. Francis +5 more
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