Results 51 to 60 of about 11,759,752 (209)
Zhongguo shuxue zazhiObjective To study the RHD genotyping of primary screening RhD negative population in Beijing, and analyze the serological characteristics of different genotypes and the distribution of Rh phenotypes.
Ke SONG +3 more
doaj +1 more source
Determining the Frequency of Genes Producing Colicins Ia and V in Escherichia coli Strains Isolated from Clinical Samples of Medical Centers in Yazd City [PDF]
Majallah-i Dānishgāh-i ’Ulūm-i Pizishkī-i Shahīd Ṣadūqī Yazd, 2023 Introduction: Bacteriocins are peptides with antimicrobial properties. They are ribosomally synthesized and produced by both gram-positive and gram-negative bacteria. The bacteriocins produced by Escherichia coli are called colicins.
Habibollah Zare +4 more
doaj
The infinitely many genes model with horizontal gene transfer [PDF]
arXiv, 2013 The genome of bacterial species is much more flexible than that of eukaryotes. Moreover, the distributed genome hypothesis for bacteria states that the total number of genes present in a bacterial population is greater than the genome of every single individual. The pangenome, i.e.
arxiv
Genetics, 2004 Although the distribution of frequencies of genes influencing quantitative traits is important to our understanding of their genetic basis and their evolution, direct information from laboratory experiments is very limited. In theory, different models of
Xu‐Sheng Zhang +2 more
semanticscholar +1 more source
On the Order of Gene Distribution on Chromosomes Across the Animal Kingdom [PDF]
arXiv, 2019 Background. The large-scale pattern of distribution of genes on the chromosomes in the known animal genomes is not well characterized. We hypothesized that individual genes will be distributed on chromosomes in a mathematically ordered manner across the animal kingdom. Results.
arxiv
MEASUREMENT OF GENE FREQUENCY DRIFT IN SMALL POPULATIONS
, 1955 The causes of changes in gene frequency from generation to generation in an evolving population may be thought of as being of two kinds (Wright, 1949, 1951): (1) systematic factors (selection, mutation, and migration) which tend to carry the gene ...
J. Crow, N. Morton
semanticscholar +1 more source
FREQUENCY OF NRAS AND KRAS GENES IN NEWLY DIAGNOSED ACUTE MYELOID LEUKEMIA PATIENTS
Pakistan Armed Forces Medical Journal, 2020 Objective: To determine the frequency of NRAS and KRAS mutations in newly diagnosed acute myeloid leukemia patients and correlation with their clinicopathological parameters along with prognostic impact. Study Design: Cross-sectional study.
Sidra Barlas +5 more
doaj
Maximum-frequency gene tree: a simplified genome-scale approach to overcoming incongruence in molecular phylogenies [PDF]
arXiv, 2006 Genomes and genes diversify during evolution; however, it is unclear to what extent genes still retain the relationship among species. Model species for molecular phylogenetic studies include yeasts and viruses whose genomes were sequenced as well as plants that have the fossil-supported true phylogenetic trees available.
arxiv
The site frequency spectrum of dispensable genes [PDF]
arXiv, 2014 The differences between DNA-sequences within a population are the basis to infer the ancestral relationship of the individuals. Within the classical infinitely many sites model, it is possible to estimate the mutation rate based on the site frequency spectrum, which is comprised by the numbers $C_1,...,C_{n-1}$, where n is the sample size and $C_s$ is ...
arxiv
Medycyna PracyBackground The study aimed to investigate the influence of extremely low-frequency electromagnetic fields (ELF-EMF) on clear cell renal cell carcinoma (ccRCC) by assessing alterations in gene expression and the secretion of cytokines and chemokines ...
Aleksandra Cios +7 more
doaj +1 more source