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Sexuality Portal

Sex refers to the male and female duality of biology and reproduction, a process in biological DNA that dates back 3.5 - 4.6 billion years.[1] Unlike organisms that only have the ability to reproduce asexually, sexed male and female pairs have the ability to produce offspring through meiosis and fertilization. The two sexes attract one another and communicate their readiness to procreate through differences in their biology. Image File history File links Portal. ... The gender symbols used to denote a male or female organism. ... This article is about sexual intercourse in humans and its societal implications. ... Sexual behavior is a form of physical intimacy that may be directed to reproduction (one possible goal of sexual intercourse) and/or to the enjoyment of activity involving sexual gratification. ... Look up sex in Wiktionary, the free dictionary. ... The shield and spear of the Roman God Mars are often used to represent the male sex In heterogamous species, male is the sex of an organism, or of a part of an organism, which typically produces smaller, mobile gametes (spermatozoa) that are able to fertilise female gametes (ova). ... The hand mirror and comb of the Roman Goddess Venus is often used to represent the female sex. ... Biology (from Greek βίος λόγος, see below) is the study of life. ... Sexual reproduction is a type of reproduction that results in increasing genetic diversity of the offspring. ... Biology (from Greek βίος λόγος, see below) is the study of life. ... The structure of part of a DNA double helix. ... A crab is an example of an organism. ... This article is about human asexuality; asexual reproduction is a separate topic. ... In biology, meiosis is the process that allows one diploid cell to divide in a special way to generate haploid cells in eukaryotes. ... Categories: Biology stubs ...


An organism's sex category reflects its biological reproductive function rather than its sexuality other behavior. The female sex is defined as the one which produces the larger gamete and which typically bears the offspring. In contrast, the male sex has a smaller gamete and rarely bears offspring. In some animals, sex may be assigned to specific structures rather than the entire organism. Earthworms, for example, are normally hermaphrodites. Gametes, from the ancient Greek γαμετης (spouse), are the specialized germ cells that come together during fertilization (conception) in organisms that reproduce sexually. ... In biology, offspring are the product of reproduction, a new organism produced by one or more parents. ... Families   Acanthodrilidae   Ailoscolecidae   Alluroididae   Almidae   Biwadrilidae   Eudrilidae   Exxidae   Glossoscolecidae   Lumbricidae   Lutodrilidae   Megascolecidae   Microchaetidae   Ocnerodrilidae   Octochaetidae   Sparganophilidae Earthworm is the common name for the larger members of the Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida. ... An intersexual is a person (or individual of any unisexual species) who is born with genitalia and/or secondary sexual characteristics of indeterminate sex, or which combine features of both sexes. ...

Contents

Evolution of sex

Main article: Evolution of sex

The evolutionary origin of sex is still uncertain, although plausible explanations exist. The most likely cause is thought to be the advantage conferred to a species by the creation of genetic variation itself. Beneficial traits in the form of mutations can be spread more rapidly through sexual reproduction. Likewise, deleterious mutations are more rapidly culled from the population when they are brought together to produce unfit individuals. Finally, combinations of genes that together result in fitter individuals are more likely to occur as a result of sexual reproduction[2]. The evolution of sex is a major puzzle in modern evolutionary biology. ... This article is about evolution in biology. ...


One of the limitations of sexual reproduction in most species is that only one of the sexes is capable of producing offspring. By comparison, every member of an asexual species can reproduce. Another restriction is the requirement that two members of the same species (and of the opposite sex) must seek each other out in order to reproduce.


Non-animal species

Holly has unisexual reproductive units occurring on different individuals: (above) shoot with flowers from male plant; (top right) male flower enlarged, showing stamens with pollen and reduced, sterile stigma; (below) shoot with flowers from female plant; (lower right) female flower enlarged, showing stigma and reduced, sterile stamens with no pollen
Holly has unisexual reproductive units occurring on different individuals: (above) shoot with flowers from male plant; (top right) male flower enlarged, showing stamens with pollen and reduced, sterile stigma; (below) shoot with flowers from female plant; (lower right) female flower enlarged, showing stigma
and reduced, sterile stamens with no pollen
Main article: Plant sexuality

Plants are hermaphrodites, but this terminology is quickly complicated by variations in the degree of sexuality. As with animals, there are only two types of gametes. These are generally called male and female based on their relative sizes and motility. In flowering plants, flowers bear the gametes. In some cases, flowers may contain only one type of gamete, while in others they may contain both. Holly (Ilex aquifolium) flowers; male above, female below. ... Holly (Ilex aquifolium) flowers; male above, female below. ... Species Ilex ambigua - Sand Holly Ilex amelanchier - Swamp Holly Ilex aquifolium - European Holly Ilex bioritsensis Ilex buergeri Ilex canariensis - Small-leaved Holly Ilex cassine - Dahoon Holly Ilex centrochinensis Ilex ciliospinosa Ilex colchica Ilex collina Ilex corallina Ilex coriacea Ilex cornuta - Chinese Holly Ilex crenata - Japanese Holly Ilex cyrtura Ilex decidua... Stamens of the Amaryllis with prominent anthers carrying pollen Insects, while collecting pollen, accidentally transfer it from one flower to another, bringing about pollination The stamen is the male organ of a flower. ... SEM image of pollen grains from a variety of common plants: sunflower (Helianthus annuus), morning glory (Ipomoea purpurea), hollyhock (Sidalcea malviflora), lily (Lilium auratum), primrose (Oenothera fruticosa), and castor bean (Ricinus communis). ... Amaryllis style and stigmas A carpel is the female reproductive organ of a flower; the basic unit of the gynoecium. ... Plant sexuality deals with the wide variety of sexual reproduction systems found across the plant kingdom. ... u fuck in ua ... The 1st-century BC sculpture The Reclining Hermaphrodite, in the Museo Nazionale Romano, Palazzo Massimo Alle Terme in Rome In zoology and botany, a hermaphrodite is an organism that possesses both male and female sex organs during its life[1]. In many species, hermaphroditism is a common part of the... A Phalaenopsis flower A flower, (<Old French flo(u)r<Latin florem<flos), also known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called angiosperms). ...


In other varieties of multicellular life (e.g. the fungi division, Basidiomycota), sexual characteristics can be much more complex, and may involve many more than two sexes. For details on the sexual characteristics of fungi, see: Hypha and Plasmogamy. Hyphae as seen under a log A hypha (plural hyphae) is a long, branching filament found primarily in fungi, but also in fungus-like bacteria such as Actinomyces and Streptomyces. ... Plasmogamy is a stage in the sexual reproduction of fungi. ...


Animal species

Main articles: Animal sexuality and Mating system

Animal sexual behavior takes many different forms, even within the same species. Researchers have observed monogamy, promiscuity, sex between species, sexual arousal from objects or places, rape, necrophilia, sexual orientation (heterosexuality, homosexuality, bisexuality and situational sexual behaviour) and a range of other practices among animals other than humans. Related studies have noted diversity in sexed bodies and gendered behaviour, such as intersex and transgender animals. Animal sexual behavior takes many different forms, even within the same species. ... In sociobiology and behavioural ecology, the term mating system is used to describe the ways in which animal societies are structured in relation to sexual behaviour. ... Phyla Subregnum Parazoa Porifera Subregnum Eumetazoa Placozoa Orthonectida Rhombozoa Radiata (unranked) Ctenophora Cnidaria Bilateria (unranked) Acoelomorpha Myxozoa Superphylum Deuterostomia Chordata Hemichordata Echinodermata Chaetognatha Xenoturbellida Superphylum Ecdysozoa Kinorhyncha Loricifera Priapulida Nematoda Nematomorpha Onychophora Tardigrada Arthropoda Superphylum Platyzoa Platyhelminthes Gastrotricha Rotifera Acanthocephala Gnathostomulida Micrognathozoa Cycliophora Superphylum Lophotrochozoa Sipuncula Nemertea Phoronida Ectoprocta Bryozoa... Sexual behavior is a form of physical intimacy that may be directed to reproduction (one possible goal of sexual intercourse) and/or to the enjoyment of activity involving sexual gratification. ... In biology, a species is one of the basic units of biodiversity. ... Monogamy is the custom or condition of having only one mate during a period of time. ... Promiscuity is the practice of making relatively casual and indiscriminate choices. ... Look up Necrophilia in Wiktionary, the free dictionary. ... Sexual orientation describes the direction of an individuals sexuality, often in relation to their own sex or gender. ... This article or section is in need of attention from an expert on the subject. ... Homosexuality refers to sexual and romantic attraction between two individuals of the same sex. ... Bisexual redirects here. ... Situational sexual behavior is sexual behavior of a kind that is different from what is usual for that person or from what this person eventually prefers, due to a social environment that permits or encourages those acts. ... The gender symbols used to denote a male or female organism. ... An intersexual is a person (or individual of any unisexual species) who is born with genitalia and/or secondary sexual characteristics of indeterminate sex, or which combine features of both sexes. ... A Transgender symbol. ...


The study of animal sexuality (and primate sexuality especially) is a rapidly developing field. It used to be believed that only humans and a handful of species performed sexual acts other than for procreation, and that animals' sexuality was instinctive and a simple response to the "right" stimulation (sight, scent). Current understanding is that many species believed monogamous have now been proven to be promiscuous or opportunistic in nature, a wide range of species appear to both masturbate and to use objects as tools to help them do so, in many species animals try to give and get sexual stimulation with others where procreation is not the aim, and homosexual behavior has now been observed among 1,500 species, and in 500 of those it is well documented. Reproduction is the creation of one thing as a copy of, product of, or replacement for a similar thing, e. ... Masturbation is the manual excitation of the sexual organs, most often to the point of orgasm. ... A modern hammer is directly descended from ancient hand tools A tool or device is a piece of equipment that most commonly provides a mechanical advantage in accomplishing a physical task. ...


More than two sexes

There are species that have 3, 4 or 5 sexes. For example:

  • the clam shrimp Eulimnadia texana has three sexes, that is, it is a triploid organism.[3]
  • harvester ant genus Pogonomyrmex has three sexes[4] or maybe four sexes[5]
  • the reptile tuatara might have four sexes [1]
  • Coprinus macrorhizus (Pers.) Rea might have three or four sexes [2]
  • Coprinus lagopus has four sexes [3]
  • Fausto-Sterling proposes that there are five sexes of humans [6][4]
  • Other species have exhibited evidence of 5 sexes [5]

Species Sphenodon punctatus (Gray, 1842) Sphenodon guntheri Buller, 1877 Sphenodon diversum (extinct) The tuatara is a reptile of the family Sphenodontidae, endemic to New Zealand. ...

Humans

Stylised illustration of humans on the Pioneer plaque, showing both male and female.
Stylised illustration of humans on the Pioneer plaque, showing both male and female.
See Human sexuality for information about sexual activities, sexual sensation, sexual gratification, and sexual intimacy between human beings

In humans, "sex" is often perceived as a dichotomous state or identity for most biological and social purposes - such that a person can only be female or male. But many factors, including one's biology, environment, psychology and social context, have a role in determining how a particular person, and those around them, view their sex. Although the table below shows common differences between males and females, many people do not correspond to "male" or "female" with regard to every criteria. Image File history File links Human. ... Image File history File links Human. ... The illustration on the Pioneer plaque. ... This article is about the issues and phenomena pertaining to human sexual function and behavior. ... Biology (from Greek βίος λόγος, see below) is the study of life. ... // The Unobservable Although the term social is a crucial category in social science and often used in public discourse, its meaning is often vague, suggesting that it is a fuzzy concept. ...


"Primary" sexual characteristics are typically present at birth and directly involved in reproduction. "Secondary" sexual characteristics typically develop later in life (usually during puberty) and are not directly involved in reproduction. Differences between the sexes are known as sexual dimorphism. At the biological level these differences are usually: A sex organ, or primary sexual characteristic, narrowly defined, is any of those anatomical parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in a complex organism; namely: Male: penis (notably the glans... A peafowl displays its long, colored feathers, an example of its secondary sexual characteristics. ... Puberty refers to the process of physical changes by which a childs body becomes an adult body capable of reproduction. ... Female (left) and male Common Pheasant, illustrating the dramatic difference in both color and size between the sexes Sexual dimorphism is the systematic difference in form between individuals of different sex in the same species. ...

Level Characteristics Female Male
Primary
Sex chromosomes XX XY
Gametes Ova Spermatozoon
Sex organs Ovaries Testes
Predominant Sex hormones Estrogen and Progesterone Testosterone
Anatomy of internal genitalia clitoral crura, vagina, uterus, fallopian tubes corpora cavernosa, urethra, prostate, seminal vesicles
Anatomy of external genitalia glans clitoris, labia, vulva, clitoral hood, perineal urethra glans penis, scrotum, phallus, foreskin fused perineum
Secondary
Height Relatively shorter Relatively taller
Body fat Relatively more Relatively less
Body form development "Hourglass" shape: 8 "Triangular" shape:
Other Breasts and menstrual cycle Beard and body hair

At the psychosocial level, the sexes differ with regard to the way society treats them and expects them to behave: A sex-determination system is a biological system that determines the development of sexual characteristics in an organism. ... Karyogram of human female A karyotype is the complete set of all chromosomes of a cell of any living organism. ... Karyogram of human female A karyotype is the complete set of all chromosomes of a cell of any living organism. ... Gametes, from the ancient Greek γαμετης (spouse), are the specialized germ cells that come together during fertilization (conception) in organisms that reproduce sexually. ... A human ovum Sperm cells attempting to fertilize an ovum An ovum (plural ova) is a haploid female reproductive cell or gamete. ... A spermatozoon or spermatozoan ( spermatozoa), from the ancient Greek σπέρμα (seed) and ζῷον (living being) and more commonly known as a sperm cell, is the haploid cell that is the male gamete. ... A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in an complex organism; namely: Male: penis (notably the glans penis... Human female internal reproductive anatomy Ovaries are egg-producing reproductive organs found in female organisms. ... The testicles, or testes (singular testis), are the male generative glands in animals. ... Sex hormones are hormones that affect the reproductive system. ... Estriol. ... Progesterone is a C-21 steroid hormone involved in the female menstrual cycle, pregnancy (supports gestation) and embryogenesis of humans and other species. ... Testosterone is a steroid hormone from the androgen group. ... Anatomical drawing of the human muscles from the Encyclopédie. ... A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in an complex organism; namely: Male: penis (notably the glans penis... The clitoral crura are an internal portion of the clitoris. ... The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ... The uterus or womb is the major female reproductive organ of most mammals, including humans. ... The Fallopian tubes, also known as oviducts, uterine tubes, and salpinges (singular salpinx), are two very fine tubes leading from the ovaries of female mammals into the uterus. ... A corpus cavernosum is one of a pair of a sponge-like regions of erectile tissue which contain most of the blood in the male penis during erection. ... In anatomy, the urethra is a tube which connects the urinary bladder to the outside of the body. ... Male Anatomy The prostate is an exocrine gland of the male mammalian reproductive system. ... Male Anatomy The seminal vesicles are a pair of glands on the posterior surface of the urinary bladder of males. ... The clitoris (Greek ) is a female sexual organ. ... Parts of a vulva The external genital organs of the female are collectively known as the vulva (also sometimes called the pudenda). ... Labeled picture of external human female reproductive anatomy. ... In female human anatomy, the clitoral hood, (also called prepuce), is a fold of skin that surrounds and protects the clitoral glans. ... A perineal urethra is a human urethral opening that is located on the perineum rather than at the tip of the phallus. ... The penis (plural penises, penes) is an external male sexual organ. ... In some male mammals, the scrotum is a bag of skin and muscle containing the testicles. ... The phallus usually refers to the male penis, or sex organ. ... The Male Anatomy The foreskin or prepuce (a technically broader term that also includes the clitoral hood, the homologous structure in women) is a retractable double-layered fold of skin and mucous membrane that covers the glans penis and protects the urinary meatus when the penis is not erect. ... The muscles of the male perineum In human anatomy, the perineum is generally defined as the surface region in both males and females between the pubic symphysis and the coccyx. ... Height is a measurement of the distance from the bottom to the top of something which is upright. ... Adipose tissue is an anatomical term for loose connective tissue composed of adipocytes. ... FINE MAMMARY TISSUE, I WANT TO TONGUE THEM. // Cross section of the breast of a human female. ... Menstrual cycle The menstrual cycle is a recurring cycle of physiological changes in the females of some animal species that is associated with reproductive fertility. ... A man with a full beard A beard is the hair that grows on a mans chin, cheeks, neck, and the area above the upper lip (the opposite is a clean-shaven face). ... Hair is also a musical: see Hair (musical) and Hair (movie) Hair is the filamentous outgrowth of the epidermis found in mammals. ...

Characteristics Female Male
Assigned sex, gender of rearing
and gender identity
Girl, Woman Boy, Man
Gender role Feminine Masculine
Sexual orientation Androphilic Gynephilic

The relationship between the various levels of biological sexual differentiation is fairly well understood. Many of the biological levels are said to cause, or at least shape, the next level. For example, in most people, the presence of a Y chromosome causes the gonads to become testes, which produce hormones that cause the internal and external genitalia to become male, which in turn lead parents to assign 'male' as the sex of their child (assigned sex), and raise the child as a boy (gender of rearing). However, the degree to which biological and environmental factors contribute to the psychosocial aspects of sexual differentiation, and even the interrelationships between the various psychosocial aspects of differentiation, is less well understood as illustrated by the ongoing nature versus nurture debate. Sex assignment refers to the assigning of sex at the birth of a baby. ... Gender of rearing is the gender in which parents rear a child. ... This article or section does not cite its references or sources. ... // Two Tamil girls in Tiruvannamalai. ... Diverse women. ... Four boys on the West Bank. ... A man is a male human. ... A bagpiper in Scottish military clan-uniform. ... Femininity comprises the physical and mental attributes associated with the female sex and is partly culturally determined. ... The examples and perspective in this article or section may not represent a worldwide view. ... Sexual orientation describes the direction of an individuals sexuality, often in relation to their own sex or gender. ... In the context of male homosexuality, androphilia is the mutual attraction of adult men. ... 1. ... The human Y chromosome is one of two sex chromosomes, it contains the genes that cause testis development, thus determining maleness. ... A hormone (from Greek horman - to set in motion) is a chemical messenger from one cell (or group of cells) to another. ... A sex organ, or primary sexual characteristic, narrowly defined, is any of those parts of the body (which are not always bodily organs according to the strict definition) which are involved in sexual reproduction and constitute the reproductive system in an complex organism; namely: Male: penis (notably the glans penis... Nature vs Nurture is a shorthand expression for debates about the relative importance of an individuals innate qualities (nature) versus personal experiences (nurture) in determining or causing individual differences in physical and behavioral traits. ...


Discordance

See also: homosexuality, cross-dressing, transvestism, transgender, and third gender

Discordance is the term used to describe the extent to which people differ from the usual biological and psychosocial types described above. Some discordances are biological, such as when the sex of the chromosomes (genetic sex) does not match the sex of the external genitalia (anatomic sex) - this is known as intersex. Discordances between the biological and psychosocial levels (such as when the gender identity does not match the anatomic sex) or between the various psychosocial levels (such as when the gender role does not match the gender identity) are even more common, but less well understood. Homosexuality refers to sexual and romantic attraction between two individuals of the same sex. ... This articles is about cross-dressing in general, that is the act of wearing the clothing of another gender for any reason. ... The term transvestism has undergone several changes of meaning since it was coined in the 1910s, and it is still used in all of these meanings except the very first one. ... A Transgender symbol. ... Third gender was used from the late 19th century to describe people who did not fit into the then existing gender categories: female genitalia = female identity = female behavior = desire male partner male genitalia = male identity = male behavior = desires female partner Today this scheme is also known as binary gender system... An intersexual is a person (or individual of any unisexual species) who is born with genitalia and/or secondary sexual characteristics of indeterminate sex, or which combine features of both sexes. ... This article or section does not cite its references or sources. ... A bagpiper in Scottish military clan-uniform. ... This article or section does not cite its references or sources. ...


In gender theory, the term "heteronormativity" refers to the idea that human beings fall into two distinct and complementary categories, male and female; that sexual and marital relations are normal only when between two people of different genders; and that people should follow roles determined by their gender. Instead, some people have sought to define their sexuality and sexual identity in non-polar terms, in the belief that the simple division of all humans into "males" and "females" does not fit their individual conditions. A proponent of this movement away from polar oppositions, Anne Fausto-Sterling, recognized five sexes: male, female, merm (male pseudohermaphrodite), ferm (female pseudohermaphrodite) and herm (true hermaphrodite). Although she was heavily criticized, her idea demonstrates the difficulty and imperfection of the current social responses to these variations. Gender studies is a theoretical work in the social sciences or humanities that focuses on issues of sex and gender in language and society, and often addresses related issues including racial and ethnic oppression, postcolonial societies, and globalization. ... Heteronormativity is a term used in the discussion of sexual behavior, gender, and society, primarily within the fields of queer theory and gender theory. ... Anne Fausto-Sterling, Ph. ... An intersexual is a person (or individual of any unisexual species) who is born with genitalia and/or secondary sexual characteristics of indeterminate sex, or which combine features of both sexes. ... True hermaphroditism is a medical term for an intersex condition in which a person is born with both ovarian and testicular tissue. ...


Social and legal considerations

Forms of legal or social distinction or discrimination based on sex include sex segregation and sexism. Notably, some businesses, public institutions, and laws may provide privileges and services for one sex and not another, or they may require different sexes to be physically separated. Recently, western societies have moved towards greater sexual equality. This article is about discrimination in the social science sense. ... This article needs to be cleaned up to conform to a higher standard of quality. ... The sign of the headquarters of the National Association Opposed To Woman Suffrage Sexism is commonly considered to be discrimination and/or hatred against people based on their sex rather than their individual merits, but can also refer to any and all systemic differentiations based on the sex of the...


In gender theory, the term "heteronormativity" refers to the idea that human beings fall into two distinct and complementary categories, male and female; that sexual and marital relations are normal only when between two people of different genders; and that each gender has certain natural roles in life. Gender studies is a theoretical work in the social sciences or humanities that focuses on issues of sex and gender in language and society, and often addresses related issues including racial and ethnic oppression, postcolonial societies, and globalization. ... Heteronormativity is a term used in the discussion of sexual behavior, gender, and society, primarily within the fields of queer theory and gender theory. ...


Notes

  1. ^ Orgel, Leslie E.. The Origin of Life on the Earth. Scientific American. Retrieved on 2007-01-03.
  2. ^ Burt, Austin (2000). "Perspective: sex, recombination, and the efficacy of selection--was Weismann right?". Evolution: International Journal of Organic Evolution 54 (2): 337-351.
  3. ^ Evolution with three sexes. University of British Columbia. Retrieved on 2007-01-03.
  4. ^ G. E. Julian, J. H. Fewell, J. Gadau, R. A. Johnson, D. Larrabee (2002). "Genetic determination of the queen caste in an ant hybrid zone". Procedings of the National Academy of Sciences 99 (12): 8157-8160.
  5. ^ Whitfield, John (2004). "Everything You Always Wanted to Know about Sexes". Public Library of Science: Biology 2 (6).
  6. ^ THE FIVE SEXES, REVISITED, Sciences, Jul/Aug2000, Vol. 40 Issue 4, p18, 6p, 1c, 2bw

2007 (MMVII) is a common year starting on Monday of the Gregorian calendar. ... January 3 is the 3rd day of the year in the Gregorian calendar. ... 2007 (MMVII) is a common year starting on Monday of the Gregorian calendar. ... January 3 is the 3rd day of the year in the Gregorian calendar. ...

See also

Look up Sex in
Wiktionary, the free dictionary.

Wikipedia does not have an article with this exact name. ... Wiktionary is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... This article is about the issues and phenomena pertaining to human sexual function and behavior. ... Many species of animals, particularly those domesticated, have been given specific names for the male, the female, and the young of the species. ... This article needs to be cleaned up to conform to a higher standard of quality. ... Sexual differentiation is the process of development of the differences between males and females from an undifferentiated zygote (fertilized egg). ... Sex ratio by country for total population. ... This article is about sexual intercourse in humans and its societal implications. ...

External links and further reading

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