نتایج جستجو برای: sexual cell
تعداد نتایج: 1792234 فیلتر نتایج به سال:
In recent years, our knowledge of the conserved master-switch gene doublesex (dsx) and its function in regulating the development of dimorphic traits in insects has deepened considerably. Here, a comprehensive overview is given on the properties of the male- and female-specific dsx transcripts yielding DSX(F) and DSX(M) proteins in Drosophila melanogaster, and the many downstream targets that t...
a:4:{s:9:"Objective";s:136:"Objectives: This study aimed to explore the components of sexual behaviors and their possible associations with the women's demographic.";s:19:"MaterialsAndMethods";s:220:"A National Sexual Behavior Assessment Questionnaire was administered to 500 women ages 15 to 45 who referred to the public health centers seeking for health care services. The associations with dem...
Introduction: Sexual is one of the important factors for well-being in married life and also quality of life, because a good sexual life caused safety between spouses and without it maybe caused divorce. This study has been done for assessing the Prevalence of Sexual Dysfunction among divorce requested in family court in Tehran, 2006-2007. Materials & Methods: This cross sectional study has be...
Identifying factors behind sexual disorders is of paramount importance. Knowing how these variables work and impinge on each other can improve the quality of couple's sexual life, and reduce the psychological and sociological costs of prevention and treatment of sexual disorders. The present study aimed to examine the mediating role of emotion regulation difficulties and their impact on the rel...
Sexual reproduction is a trait shared by all complex life, but the complete account of its origin is missing. Virtually all theoretical work on the evolution of sex has been centered around the benefits of reciprocal recombination among nuclear genes, paying little attention to the evolutionary dynamics of multi-copy mitochondrial genomes. Here I develop a mathematical model to study the evolut...
Farajnia, S - Dr Hoseinian, S - Dr Shihidi, SH - Dr Sadeghi, M The goal of present study was to examine the role of sexual function and quality of relationship on marital commitment. The sample included 115 couples. The research instruments were Quality of Marital Relationship Questionnaire, Marital Commitment Questionnaire and Marital Sexual Function Questionnaire. Data were analyzed by correl...
Single interstitial stem cells of male polyps of Hydra magnipapillata give rise to clones that differentiate either male or female gametes. To test the sexual stability of these clones, stem cells were recloned. The results indicate that stem cells from female clones are stable in their sexual differentiation capacity; male stem cells, by comparison, switch sexual phenotype at the rate of 10(-2...
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