نتایج جستجو برای: genetic variability
تعداد نتایج: 768742 فیلتر نتایج به سال:
Survey of genetic diversity is essential for breeding program. The genetic diversity of A. andreanum, 10 cultivars were analyzed using seven Start Codon Targeted (SCoT) and 40 RAPD markers in which 22 RAPD markers and all of SCoT marker produced polymorphic bands. Matrix genetic distance ranged from 0.01 to 0.37 for RAPD and from 0.02 to 0.52 for SCoT marker analysis. Polymorphism percentage ge...
Acipenser stellatus (stellate sturgeon) represents a sturgeon species of great importance for the scientific community and fishermen that has been intensively captured for decades. Besides of overfishing and poaching, their reproduction sites have been destroyed and their natural habitats were affected by pollution. In consequence, wild populations of stellate sturgeon have decreased dramatical...
In this study the genetic polymorphism of growth hormone (GH) gene as a candidate gene in livestock was investigated. Blood samples were randomly collected from 34 Alpine and 42 Saanen goats. DNA was extracted from blood samples and a 365 bp region of exon 5 of the GH genewas amplified by polymerase chain reaction (PCR). PCR products were analyzed using single strand conformation polymorphism (...
Genetic diversity is the basis of the natural evolution of plant breeding and biological system are important components of sustainability. The aim of this study was to evaluate 116 genotypes of Triticum turgidum from seven countries in terms of morphological traits. The results showed that high significant differences among the genotypes. The correlation between gra...
this study was conducted in order to investigate genetic diversity and population structure of pike-perch in the northern part of iran. for this purpose, 207 adult pike-perches from four regions of the caspian sea watershed (talesh coasts, anzali wetland, chaboksar coasts and aras dam) were collected. dna was extracted and by using 15 pairs of microsatellite primers, polymerase chain reaction (...
Large populations with extensive breeding distributions may sustain greater genetic variability, thus producing a positive relationship between genetic variation and population size. Levels of genetic variability may also be affected by sexual selection, which could either reduce levels because a small fraction of males contribute to the following generation, or augment them by generating genet...
BACKGROUND The natural habitat of wild P. ginseng is currently found only in the Russian Primorye and the populations are extremely exhausted and require restoration. Analysis of the genetic diversity and population structure of an endangered species is a prerequisite for conservation. The present study aims to investigate the patterns and levels of genetic polymorphism and population structure...
Infancy is a period featuring a high level of intersubject variability but the brain basis for such variability and the potential genetic/environmental contributions remain largely unexplored. The assessment of the brain's functional connectivity during infancy by the resting state functional magnetic resonance imaging (rsfMRI) technique (Biswal et al., 1995) provides a unique means to probe th...
Quantitative genetics has primarily focused on describing genetic effects on trait means and largely ignored the effect of alternative alleles on trait variability, potentially missing an important axis of genetic variation contributing to phenotypic differences among individuals. To study the genetic effects on individual-to-individual phenotypic variability (or intragenotypic variability), we...
Common carp CyprinuscarpioL. is an important economic species in Caspian Sea. Genetic variability and differentiation of common carp investigated in and Gorgan rood estuary, Ramsar shoreline, Anzali wetland and Aras dam using microsatellite markers. A total of 100 specimens of adult common carp were sampled from regions. Seven pairs of microsatellites were tested on the common carp. In this stu...
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