Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"sex differentiation"”.
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Genomic analysis of sex chromosomes and sex differentiation in Caricaceae
… excellent model species to study mechanisms for sex determination and sex chromosome evolution in plants, due to the presence of three sex types: female, male, and hermaphrodite. Previous research has revealed the location of the sex determination region (SDR) and the existence of three sex …
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Sexual differentiation of somatic and germ cell lineages of the mouse gonad
The process of gonadal sex differentiation in mammals remains poorly understood despite the identification of a few key genes such as Sry and Sox9. To further our understanding of gonad organogenesis, a PCR based subtractive hybridization was performed to identify mouse genes that demonstrate …
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Thomistic feminism.
… Thomas Aquinas to think through questions about sex and gender in light of contemporary thinking, particularly questions drawn from feminist and gender theory. In chapter two, I present the metaphysics of sex differentiation as an accidental difference between humans, and I propose that much of …
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Genetic Regulation of Müllerian Duct Regression
… uterus and upper vagina. An essential step in sex differentiation for males is the regression of the MD. This regression initiates with anti-Müllerian hormone (<em>Amh</em>) transcription in the fetal testes during embryonic development and approaches completion near birth. MD regression …
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Becoming a man: the prescriptions of manhood and manliness in early modern England
… of biological distinctions between the two sexes, the importance placed on outward conformity to perceptions of gender difference is highlighted, providing a foundation of early modern understanding of sex differentiation, which is then built upon to realise corporeal differences within the …
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Sexual patterns of monooxygenase function in the liver of marine teleosts and the regulation of activity by estradiol
Sex differences in hepatic microsomal cytochrome P-450 and monooxygenase activities were investigated in the marine teleosts scup (Stenotomus chrysops) and winter flounder (Pseudopleuronectes americanus). Microsomal cytochrome P-450 content per unit proteln was 3-6 tlmes lower in gonadally mature …
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Gonadal intersex in teleosts: Mechanisms, molecular biomarkers and diagnostic assays
… to these contaminants can negatively impact sex differentiation and reproductive output. Specifically, development of gonadal intersex in gonochoristic (fixed sex) fish species has been studied extensively in relation to exposure to this class of compounds. The main objectives of this …
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Dissecting the spatio-temporal development of the human reproductive tract
… and overall health due to the systemic effect of sex hormones. Its development depends on tightly regulated processes of sex differentiation, spatial patterning, and morphogenesis, which, when disrupted, can lead to congenital alterations and long-term reproductive disorders. In this thesis, I …
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The relationship between selected student characteristics, participation in vocational education and the labor market achievement of high school graduates
… vocational education credits taken (VTE-Credit), Sex, Job Satisfactoriness (Boss-Sat) of the graduates, job performance, income earned per hour, and Job . Satisfaction. The data collected were analyzed by using the stepwise regression to predict the labor market achievement variables. A partial …
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Adamts9 is critical for the development of primary ovarian follicles
… Adamts9 KO zebrafish had a heavily male-biased sex ratio as 6–7-month-old adults, and female Adamts9 KOs were infertile. Furthermore, a novel intersex phenotype was also discovered in Adamts9 KOs zebrafish. These fish lacked clearly defined ovary or testis structure. To further understand the …
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Current status of the scale insect fauna of citrus in Tunisia and biological studies on Parlatoria ziziphi (Lucas)
… four months at 20oC and two months at 24oC. Sex differentiation showed a strong male-biased sex ratio of about 2:1 at 20°C and 1:2 at 24°C. Low mean fecundities were obtained, 26±3.5 and 47.47±1.5 eggs/female at 20°C and 24°C, respectively. In addition, at each generation, P. ziziphi had the …
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Sex Determination And Differentiation In The Common Snapping Turtle - A Reptile With Temperature-Dependent Sex Determination
<p>Temperature-dependent sex determination (TSD) was first discovered in an African lizard over 40 years ago. TSD has since been shown to be exhibited by many vertebrates including some fish and amphibians, numerous lizards, turtles, and all crocodilians studied to date. Although numerous questions …
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BMP Signaling Regulates Germ Cell Pluripotency, Sexual Differentiation, and Cancer Susceptibility
… action. For example, patients with Disorders of Sex Development (DSD) have increased risk for developing malignant germ cell tumors. DSDs manifest at birth and present with atypical gonadal or anatomical sex as well as chromosomal aberrations[1, 2]. Some cases are explained by the presence of …