Results 71 to 80 of about 8,207 (204)

Genetical evidence for diploidy in Phytophthora

open access: yesGenetical Research, 1971
SUMMARYA spontaneous mutant of Phytophthora drechsleri, resistant to p-fluorophenyl-alanine and two induced mutants resistant to chloramphenicol have been selected and analysed. The pattern of inheritance of the mutant phenotypes was identical and conformed to that expected in a diploid organism.
David S. Shaw, Ikram A. Khaki
openaire   +1 more source

Amplification of the cyclin D1 gene is associated with tumour subsite, DNA non-diploidy and high S-phase fraction in squamous cell carcinoma of the head and neck

open access: yes, 2004
Amplification of CCND1 (cyclin D1 gene) in squamous cell carcinoma of the head and neck (SCCHN) is correlated to poor prognosis. The purpose of this study was to investigate whether CCND1 amplification is related to different subsites and also to DNA ...
Rennstam, Karin,   +7 more
core   +2 more sources

Diploidy confers genomic instability in Schizosaccharomyces pombe. [PDF]

open access: yesGenetics
Abstract Whole genome duplication, or polyploidy, has been implicated in driving genome instability and tumorigenesis. Recent studies suggest that polyploidy in tumors promotes cancer genome evolution, progression, and chemoresistance resulting in worse prognosis of survival.
Park JM, Pinski DF, Forsburg SL.
europepmc   +4 more sources

Nonlinearities and Switch‐Like Behavior in Gene Expression: From Genetics to Biochemistry and Back

open access: yesThe FASEB Journal, Volume 40, Issue 16, 31 August 2026.
Modest changes in transcription‐factor or chromatin‐regulator dosage can have disproportionate effects when gene‐regulatory systems operate near nonlinear thresholds. Sigmoidal input–output relationships, chromatin and cofactor recruitment, and changes in threshold position or response steepness provide molecular routes by which quantitative dosage ...
Reiner A. Veitia, James A. Birchler
wiley   +1 more source

Frequency of hyper-, hypohaploidy and diploidy in ejaculate, epididymal and testicular germ cells of infertile patients.

open access: yes, 2000
The hypothesis that sperm aneuploidy and diploidy increase as a function of spermatogenesis impairment was addressed. Ejaculated semen samples from a series of men (n = 22) with very low total normal motile count (1 x 10(6)) was analysed in terms of ...
Gaggero, G   +9 more
core   +1 more source

An Analysis Of Diploidy And Dominance In Genetic Algorithms

open access: yes, 2009
The use of diploidy and dominance in genetic algorithms (GAs) has long been used to improve performance in time-varying optimization problems. Diploidy increases diversity in GAs by allowing recessive genes to survive in a population and become active at
Simon, Daniel J.
core  

Nuclear DNA Analysis in Neuroblastoma -Significance of DNA Ploidy as a Prognostic Factor- [PDF]

open access: yes, 1993
The nuclear DNA content was measured by using flow cytometer from paraffin-embedded pathological materials in neuroblastomas. In 55 neuroblastomas, diploidy pattern was found in 26 (47.6%). In contrast, aneuploidy was in 29 (52.7%).
Sakai, Tsutomu
core  

A new approach to chromosomal abnormalities in sperm from patients with oligoasthenoteratozoospermia: detection of double aneuploidy in addition to single aneuploidy and diploidy by five-color fluorescence in situ hybridization using one probe set

open access: yes, 2008
Objective: To determine the frequencies of disomy, nullisomy, total aneuploidy, and diploidy in the sperms of infertile men. Design: A controlled prospective study.
Kutlu, Ruhusen   +5 more
core   +1 more source

Chromosome counts of some Zingiberaceous species from Thailand [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2002
The data on chromosome numbers of 22 species belonging to 10 genera of Zingiberaceae distributed in Thailand were investigated. The somatic numbers range from 20 to 48 showing diploidy and polyploidy.
Ladda Eksomtramage   +3 more
doaj  

Harnessing Genomic Information for Identifying the Geographic Origin of Five North American Tree Species in Trade

open access: yesEvolutionary Applications, Volume 19, Issue 8, August 2026.
ABSTRACT Genomic tools for traceability of wood products offer a powerful tool to support sustainable forestry, fight illegal logging, and improve conservation efforts. Traditional identification methods (e.g., wood anatomy, spectroscopy) are limited in resolution or scope, but genomic approaches can infer both species identity and geographic origin ...
Pauline Hessenauer   +10 more
wiley   +1 more source

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