preserving genetic diversity of iranian native chickens is significant in order to perform breeding programs and improved production. genetic diversity among close populations can be determined by investigating their phylogenetic relations. different approaches have been applied to determine the phylogenic relations from which genomic sequencing has been considered the most functional approach....

Rice (Oryza sativa L.) is one of the most significant cereal crops, about 3 billion people, nearly half the world's population; depend on rice for survival and it offers up to 80% of daily energy intake in most of the Asian countries. Knowledge of the distribution, extent and pattern of genetic variation is useful for estimation of any possible loss of genetic diversity and its role in breeding...

Sixty isolates of Pythium aphanidermatum as the causal agent of sugar beet root rot were selected on the basis of their geographical origins, morphological and genetic diversity studies. Pathogenicity test using the Kruskal-Wallis analysis showed significant differences between the pathogenic potential of isolates. Based on the growth rate, isolates were categorized in two groups with low and h...

objective: in recent years different hypotheses with respect to the formation of cerebral laterality were proposed. some of the researchers claim that cerebral dominance and laterality are determined by genetic factors, just as the case with eye color and blood type. however, another group states that in addition to genetic factors, environmental factors, too, have a remarkable role in hemisphe...

BACKGROUND Prior studies suggest that certain types of personality are at higher risk for developing depressive disorders. This study examined the relationship between old age depressive symptoms and two middle-age personality dimensions, neuroticism and extraversion. METHOD The present study is part of the Finnish Twin Study on Aging, where altogether 409 female twins who had completed the E...

quantitative relationships between structures of twenty six of 2-mercaptoimidazoles as c-c chemokine receptor type 2 (ccr2) inhibitors were assessed. modeling of the biological activities of compounds of interest as a function of molecular structures was established by means of genetic algorithm multivariate linear regression (ga-mlr) and genetic algorithm (ga-ann). the results showed that, the...

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Equilibrium models of isolation by distance predict an increase in genetic differentiation with geographic distance. Here we find a linear relationship between genetic and geographic distance in a worldwide sample of human populations, with major deviations from the fitted line explicable by admixture or extreme isolation. A close relationship is shown to exist between the correlation of geogra...