Sex determination in Drosophila is commonly thought to be a cell-autonomous process, where each cell decides its own sexual fate based on its sex chromosome constitution (XX versus XY). This is in contrast to sex determination in mammals, which largely acts nonautonomously through cell-cell signaling. Here we examine how sexual dimorphism is created in the Drosophila gonad by investigating the ...

Cell death is a nearly ubiquitous feature of the developing nervous system, and differential death in males and females contributes to several well studied sex differences in neuron number. Nonetheless, the functional importance of neuronal cell death has been subjected to few direct tests. Bax, a pro-apoptotic protein, is required for cell death in many neural regions. Deletion of the Bax gene...

Cell-cell fusion is essential for a variety of developmental steps in many eukaryotic organisms, during both fertilization and vegetative cell growth. Although the molecular mechanisms associated with intracellular membrane fusion are well characterized, the molecular mechanisms of plasma membrane merger between cells are poorly understood. In the filamentous fungus Neurospora crassa, cell fusi...

Abstract Cell-to-cell fusion is a fundamental biological process across the tree of life. In filamentous fungi, somatic (or anastomosis) required for normal development their syncytial hyphal networks, and it can initiate non-sexual genetic exchange processes, such as horizontal transfer parasexual cycle. Although these could be important drivers evolution asexual this remains largely unexplore...

background: marital satisfaction is affected by many factors. satisfaction with one's sexual life tends to be a pivotal factor in marital satisfaction. in iran, socio-cultural and political limitations are obstacles for sexuality-related studies, therefore, in­sufficient information is available in the area. unique in its own, in this paper we report how sexual relationships relate to mari­tal ...

abstract introduction: sexuality constitutes an important part of women's life. healthy and proper sexual functioning is one of the signs of physical and mental health. the aim of this study was to identify effect of training on sexual health of women with reduced sexual desire.   methods: this study was a randomized clinical trial. the participants were 80 married women at reproductive age who...

background: prevalence of sexual dysfunction varies from 20% to 40% in men and women in different studies in iran. despite its high prevalence, it seems that this issue has been neglected, particularly in islamic countries. the aim of this study was to assess sexual health in iran. this was a mixed method study.   methods: data were collected through evaluating country's sexual health programs ...

PURPOSE Cell phone use has become more widespread over the past decade. Young adults are frequently early adopters of new technologies, including cell phones. Most previous research examining sexting, the act of sending sexually explicit or suggestive images via text message, has focused on the legal or social consequences of this behavior. The current study focused on the public health implica...