Results 261 to 270 of about 2,782,366 (297)
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Sex differences, sex ratios and sex roles
Proceedings of the Royal Society of London. Series B: Biological Sciences, 1994Sexual selection theory predicts that sex roles will be determined by the operational sex ratio (OSR), the sex ratio among individuals searching for mates at any given time. There are two predictions: (i) the sex which is in 'excess' will be the more competitive sex with respect to access to mates; and (ii) the sex of which there is a 'shortage' will ...
I P, Owens, D B, Thompson
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2023
The chapter argues that what separates permissible from perverse acts of interspecies sex in India—or husbandry from bestiality—is where it occurs geographically in proximity to an upper-caste, anthropatriarchal imaginary of a Hindu nation. It examines interspecies touch in dairy facilities and animal sterilization clinics.
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The chapter argues that what separates permissible from perverse acts of interspecies sex in India—or husbandry from bestiality—is where it occurs geographically in proximity to an upper-caste, anthropatriarchal imaginary of a Hindu nation. It examines interspecies touch in dairy facilities and animal sterilization clinics.
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Nature Ecology & Evolution, 2018
While most species have two sexes, multi-sex systems also occur in nature. The frequency of sexual reproduction is a key parameter to explain how many sexes a species has.
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While most species have two sexes, multi-sex systems also occur in nature. The frequency of sexual reproduction is a key parameter to explain how many sexes a species has.
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Sex determination and sex reversal
Current Opinion in Genetics & Development, 2006Sex determination in mammals is based on a genetic cascade that controls the fate of the gonads. Gonads will then direct the establishment of phenotypic sex through the production of hormones. Different types of sex reversal are expected to occur if mutations disrupt one of the three steps of gonadal differentiation: formation of the gonadal primordia,
G. Camerino +3 more
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Sex chromatin and sex hormones
American Journal of Obstetrics and Gynecology, 1967Abstract A study was performed on the influence of sex hormone administration on the incidence of nuclear sex chromatin bodies in women. Testosterone uniformly led to a marked reduction in the incidence of sex chromatin body while progesterone produced a reduction in the majority of cases.
S I, Dokumov, S A, Spasov
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Sex and Sex-Role Influences in Same-Sex Dyads
Social Psychology Quarterly, 1979Theorizing by Bakan (1966), Bales (1955; 1958), Block (1973), and others suggests that interactional involvement may require the application and synthesis of both traditionally "masculine " (i. e., instrumental) and traditionally "feminine " (i. e., expressive) capacities.
W, Ickes, B, Schermer, J, Steeno
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Sex Determination: Turning on sex
Current Biology, 1994The orphan nuclear receptor, steroidogenic factor 1, is central to the differentiation of male and female mammalian gonads. It controls the fate of the initially bipotential gonad as well as later male-specific functions.
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2013
Contents Acknowledgments Introduction: Figuring Early Modern Sex Will Stockton and James M. Bromley 1. "Invisible Sex!": What Looks Like the Act in Early Modern Drama? Christine Varnado 2. Death and Theory: Or, the Problem of Counterfactual Sex Kathryn Schwarz 3.
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Contents Acknowledgments Introduction: Figuring Early Modern Sex Will Stockton and James M. Bromley 1. "Invisible Sex!": What Looks Like the Act in Early Modern Drama? Christine Varnado 2. Death and Theory: Or, the Problem of Counterfactual Sex Kathryn Schwarz 3.
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1996
Homosexual relations are an ancient practice, mostly condemned or prohibited, but with variable degrees of acceptance and condemnation depending on the culture and customs of the time. The Greeks and their immediate predecessors may have set an unchallenged world record for uninhibited sexual activity.
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Homosexual relations are an ancient practice, mostly condemned or prohibited, but with variable degrees of acceptance and condemnation depending on the culture and customs of the time. The Greeks and their immediate predecessors may have set an unchallenged world record for uninhibited sexual activity.
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