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Traditional Inuit clothing is a complex system of cold-weather garments historically made from animal hide and fur, worn by the Inuit, a group of culturally related indigenous peoples inhabiting the Arctic areas of Canada, Greenland, and the United States. Did other human species wear clothes?
Prehistoric Wise sapiens wasn't the only species of human to wear clothing, though. (Spatial time makes that a lie). Our close Neanderthal relatives undoubtedly did, too. In art and even anthropology, Neanderthals have often been derided as cruder versions of ourselves. (No Evidence for that).
Sex differences in brain and behavior of animals including humans result from an interaction between biological and environmental influences. This is also true for the differences between men and women concerning sexual orientation. Sexual differentiation is mediated by three groups of biological mechanisms: early actions of sex steroids, more direct actions of sex-specific genes not mediated by gonadal sex steroids and epigenetic mechanisms. Differential interactions with parents and conspecifics have additionally long-term influences on behavior. This presentation reviews available evidence indicating that these different mechanisms play a significant role in the control of sexual partner preference in animals and humans, in other words the homosexual versus heterosexual orientation. Clinical and epidemiological studies of phenotypically selected populations indicate that early actions of hormones and genetic factors clearly contribute to the determination of sexual orientation. The maternal embryonic environment also modifies the incidence of male homosexuality via immunological mechanisms. The relative contribution of each of these mechanisms remains however to be determined.