Gender essentialism is a concept used to examine the attribution of fixed, intrinsic, innate qualities to women and men. Alternatives to gender essentialism were proposed in the midth century. During second-wave feminismSimone de Beauvoir and other feminists in the s and 70s theorized that gender differences were socially constructed.
Posted on October 2, S uccessful sexual reproduction has two components: mating to produce offspring and parenting to ensure offspring survivaland these are typically traded off against one another. Caring for offspring may, e.
The origin and subsequent maintenance of sex and recombination are among the most elusive and controversial problems in evolutionary biology. Given the omnipresence of oncogenic processes in multicellular organisms, together with the fact that transmissible cancer cells can have dramatic effects on their host fitness, our scenario suggests that the benefits of sex and concomitant recombination will be large and permanent, explaining why sexual reproduction is, despite its costs, the dominant mode of reproduction among eukaryotes. PLoS Biol 17 6 : e
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Please take this quick survey to tell us about what happens after you publish a paper. Journal of the History of Biology. At the turn of the twentieth century, biologists such as Oscar Riddle, Thomas Hunt Morgan, Frank Lillie, and Richard Goldschmidt all puzzled over the question of sexual difference, the distinction between male and female.
The harmonious development of the human person progressively reveals in each of us the image of a child of God. The Congregation for Catholic Education, within the sphere of its competence, considers it proper to make its contribution for the application of the Conciliar Declarations, as some Episcopal Conferences have done already. This document, drawn up with the help of educational experts and submitted to wide consultation, sets itself a precise objective: to examine the pedagogic aspect of sex education, indicating appropriate guidelines for the integral formation of a christian, according to the vocation of each.
Sexual selectiontheory in postulating that the evolution of certain conspicuous physical traits—such as pronounced coloration, increased size, or striking adornments—in animals may grant the possessors of these traits greater success in obtaining mates. Mutual attraction between the sexes is an important factor in reproduction. The males and females of many animal species are similar in size and shape except for the sexual organs and secondary sexual characteristics such as the breasts of female mammals.
Naturalism is a metaphysical theory that holds that all phenomena can be explained mechanistically in terms of natural as opposed to supernatural causes and laws. Naturalism posits that the universe is a vast "machine" or "organism," devoid of general purpose and indifferent to human needs and desires. Naturalism is often confused with atheismmaterialismlogical positivismempiricismdeterminism and scientism. The deistic founders of the United States of America were advocates of naturalism.
View Larger Image. Ask Seller a Question. Described by the author as a book "about the weird diversity of sexual behavior," A Natural History of Sex explores "how to look at life, how to analyze and speculate about why something is as it is and not otherwise.
Residents of the Village Naturiste in Cap d'Agde are used to going about their daily business in the nude. The fenced-off resort on the Mediterranean has its own marina, restaurants, boutiques and banks where locals can strip off and enjoy life "in harmony with nature". Today, however, Europe's largest nudist colony has a more prudish message for over-enthusiastic visitors who are upsetting the natural order of things: no sex, please, we're naturists.