A cytogenetical study on 13 alfalfa (Medicago sativa) cultivars available in Iranian Forest and Rangelands Genebank was performed in order to obtain basic information on the variability in chiasma frequency/distribution, chromosome association and segregation. Such cytogenetic information is useful for planning hybridization programs. Cluster analysis of meiotic data and ordination of cultivars...

through an application of genetic engineering, genes from a soil bacterium bacillus thuringiensis (bt) which confer resistance to pests were transferred into rice. successful employment of genetic engineering in traditional breeding programs is dependent upon stable transmission of transgene in transgenic varieties. three different segregating f2 populations were developed from a cross between ...

today gender segregation in the workplace is increasingly sensitive. thus analysis of the reasons behind such phenomenon is of fundamental importance. the aim of this study is to investigate the occupational gender segregation among of ahwaz public libraries foundation employees with emphasis on the role of work values . the method of this research is survey and data were collected by questionn...

social differentiation is among the important concepts in sociology. the importance of the concept may be understood from its frequent recurrence in the works of the early sociologists including spencer, durkheim, weber and marx, as well as in the works of later sociologists such as parsons, smelser and luhmann. the idea of segregation is mainly discussed as a key concept in the theories of soc...

many characteristics of pear trees such as growth, fruit size and yield, are influenced by the genetic characteristic of the rootstocks. in iran, mainly european pear seedlings (pyrus communis l.) are used as the rootstock in the pear orchards. thus, evaluation of pear seedling rootstocks is an important task. this experiment was conducted in 2009 and 2010 growing seasons in order to explore th...

today gender segregation in the workplace is increasingly sensitive. thus analysis of the reasons behind such phenomenon is of fundamental importance. the aim of this study is to investigate the occupational gender segregation among ahwaz public libraries foundation employees with emphasis on the role of work values. the method of this research is survey and data were collected by questionnaire...

Background: The maternal age effect for trisomy is well known. However what is less established is whether certain women are more (or less) prone to segregation errors, independent of age. Trisomy arises primarily through maternal meiosis I chromosome segregation errors however the precise mechanism by which these errors occur is unclear. Current dogma attributes the origin of trisomy to malseg...

Objectives: This study investigated the efficacy of working memory training for improving working memory capacity and related auditory stream segregation in auditory processing disorders children. Methods: Fifteen subjects (9-11 years), clinically diagnosed with auditory processing disorder participated in this non-randomized case-controlled trial. Working memory abilities and auditory strea...