نتایج جستجو برای: sex differentiation disorders
تعداد نتایج: 1049815 فیلتر نتایج به سال:
In order to identify the sex marker in Mahisefied, Rutilus frisii kutum, samples from 5 male and 5 female fish were collected from the south Caspian Sea. Polymerase chain reaction random amplified polymorphic DNA (PCR-RAPD) was performed using 124 primer sets. All bands were numbered using 1 and 0 scores corresponding to the presence or absence of bands, respectively and data were analyzed usin...
Transcription factors related to the insect sex-determination gene doublesex (DMRT proteins) control sex determination and/or sexual differentiation in diverse metazoans and are implicated in transitions between sex-determining mechanisms during vertebrate evolution [1]. In mice, Dmrt1 is required for male gonadal differentiation in somatic cells and germ cells [2-4]. DMRT1 also maintains male ...
In 1947, Carl Richard Moore, a researcher at the University of Chicago [6], in Chicago, Illinois, wrote Embryonic Sex Differentiation and Sex Hormones, which was published in the same year as a first-edition monograph. In the book, Moore argues that regulation [7] of sex differentiation [8] in mammals is not controlled by sex hormones [9] secreted by embryonic sex organs (gonads), but is contro...
Evolutionary psychologists have hypothesized that men and women possess both long-term and short-term mating strategies, with men's short-term strategy differentially rooted in the desire for sexual variety. In this article, findings from a cross-cultural survey of 16,288 people across 10 major world regions (including North America, South America, Western Europe, Eastern Europe, Southern Europ...
Disorders of sex development (DSDs) are congenital anomalies that affect sexual differentiation of genitourinary organs and secondary sex characters. A common cause of female genital virilization is congenital adrenal hyperplasia (CAH), in which excess androgen production during development of 46XX females can result in vaginal atresia, masculinization of the urethra, a single urogenital sinus,...
Sex determination is the process deciding the sex of a developing embryo. This is usually determined genetically; however it is a delicate process, which in many cases can be influenced by environmental factors. The mechanisms controlling zebrafish sex determination and differentiation are not known. To date no sex linked genes have been identified in zebrafish and no sex chromosomes have been ...
It is widely accepted that sex steroid hormones play an important and a specific role during the process of sex differentiation in fish. In order to describe the role of the three main sex steroid hormones (testosterone--T, 17beta-estradiol--E2 and 11keto-testosterone--11KT) during embryogenesis and sex differentiation in Eurasian perch, Perca fluviatilis, eggs, larvae and juveniles originating...
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