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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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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 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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The Sex Lives of Sex Researchers
Contexts, 2014Sociologist Janice M. Irvine examines biographies of Alfred Kinsey in order to explore stigma attached to sexuality research.
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Sex or no sex, reproduction is not the question
BioEssays, 2011Thirty years after Margulis [1] proposed her theory on endosymbiosis and almost a century since Fisher’s work [2] laid the ground for the modern theory of evolution, the question surrounding the evolutionary benefit of sex is still sparking great interest [3].
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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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Effects of Sex and Sex Roles on Same-Sex Touch
Perceptual and Motor Skills, 1994Touch is an important aspect of nonverbal behavior. Important aspects of the relationship of gender and sex roles with same-sex touch were highlighted. 259 subjects participated in the procedure, yielding a significant difference between men and women on same-sex touch.
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2013
Male and female fetuses differ not only chromosomally but also hormonally. In addition, the postnatal social environment differs for boys and girls, as well as for men and women. Genes, hormones, socialization, and cognitive development combine to produce different behavior between the average male and female, as well as individual differences in sex ...
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Male and female fetuses differ not only chromosomally but also hormonally. In addition, the postnatal social environment differs for boys and girls, as well as for men and women. Genes, hormones, socialization, and cognitive development combine to produce different behavior between the average male and female, as well as individual differences in sex ...
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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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