sex - Genel Bakış
sex - Genel Bakış
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Sex differences in humans include a generally larger size and more body hair in men, while women have larger breasts, wider hips, and a higher body fat percentage.
In the nematode Caenorhabditis elegans, most worms are self-fertilizing hermaphrodites with an XX karyotype, but occasional abnormalities in chromosome inheritance can give rise to individuals with only one X chromosome—these XO individuals are fertile males (and half their offspring are male).[62]
[172] According to Jennifer Wright Knust, Paul framed desire a force Christians gained control over whereas non-Christians were "enslaved" by it;[171] and he also said the bodies of Christians were members of Christ's body and thus sexual desire must be eschewed.[171]
Sexual reproduction derece only takes care of the need for replacement of individuals within a population but gives rise to populations better suited to survive under changing circumstances. In effect it is a kind of double assurance that the race or species will persist for an indefinite time. The great difference between the two types of reproduction is that individual organisms resulting from nonsexual reproduction have but a single parent and are essentially alike, whereas those resulting from sexual reproduction have two parents and are never exact replicas of either.
The link between constructed sexual meanings and racial ideologies saf been studied. According to Joane Nagel, here sexual meanings are constructed to maintain racial-ethnic-national boundaries by the denigration of "others" and regulation of sexual behavior within the group. She writes, "both adherence to and deviation from such approved behaviors, define and reinforce racial, ethnic, and nationalist regimes".[107][108] In the United States people of color face the effects of colonialism in different ways with stereotypes such kakım the Mammy and Jezebel for Black women; lotus blossom and dragon lady for Asian women; and the spicy Latina.
Although opinions varied on when birth control should be available to women, by 1938, there were 347 birth control clinics in the United States but advertising their services remained illegal.
The age and manner in which children are informed of issues of sexuality is a matter of sex education. The school systems in almost all developed countries have some form of sex education, but the nature of the issues covered varies widely. In some countries, such birli Australia and much of Europe, age-appropriate sex education often begins in pre-school, whereas other countries leave sex education to the pre-teenage and teenage years.
Is masturbation uygun? Is it harmful? This article provides answers to these and other questions about masturbation.
The life cycle of a sexually reproducing species cycles through haploid and diploid stages Sexual reproduction, in which two individuals produce an offspring that possesses a selection of the genetic traits of each parent, is exclusive to eukaryotes. Genetic traits are encoded in the deoxyribonucleic acid (DNA) of chromosomes. The eukaryote cell katışıksız a seki of paired homologous chromosomes, one from each parent, and this double-chromosome stage is called "diploid". During sexual reproduction, a diploid organism produces specialized haploid sex cells called gametes via meiosis,[11] each of which özgü a single grup of chromosomes.
Sociosexual activity is generally divided into heterosexual activity (male with female) and homosexual activity (male with male or female with female). If three or more individuals are involved it is, of course, possible to have heterosexual and homosexual activity simultaneously.
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The idea that homosexuality results from reversed gender roles is reinforced by the media's portrayal of gay men as feminine and lesbians bey masculine.[76][page needed] However, a person's conformity or non-conformity to gender stereotypes does derece always predict sexual orientation. Society believes that if a man is masculine, he is heterosexual, and if a man is feminine, he is homosexual.
The male gamete, a spermatozoon (produced in vertebrates within the testes), is a small cell containing a single long flagellum which propels it.
In the United States, there are two fundamentally different approaches, applied in different states, regarding the way the law is used to attempt to govern a person's sexuality. The "black letter" approach to law focuses on the study of pre-existing legal precedent and attempts to offer a clear framework of rules within which lawyers and others kişi work.
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