Sexual selection is the only theory thus far that explains the sexual dimorphism seen in the hair patterns of men and women.

Sexual dimorphism is also apparent in the skull ; adult males have longer lower jaws than females, and have larger occipital crests.

*** includes Sexual dimorphism, differences in the physiology of a species based only on sex

Sexual dimorphism in body mass in the prairie dog varies 105 to 136 % between the sexes.

Sexual dimorphism peaks during weaning when the females lose weight and the males start eating more, and is at its lowest when the females are pregnant, which is also when the males are tired from breeding.

Sexual dimorphism in coloration and appearance is widespread in butterflies.

Sexual dimorphism in the species includes an absence of antlers in females.

Sexual dimorphism is conspicuous in this species, one of the most apomorph ic gamefowl.

Sexual dimorphism is slight, with the female having a slightly larger belly, and a bent iridescent stripe rather than the male's straight stripe.

Sexual dimorphism is a phenotypic difference between males and females of the same species.

Sexual dimorphism in plumage is uncommon in the cuckoos, being most common in the parasitic Old World species.

* Sexual dimorphism

Sexual dimorphism is much less marked in the southern pintails, with the male's breeding appearance being similar to the female plumage.

– S / M – sacred prostitution – Marquis de Sade – sadism – sadist – sadomasochism – sadomasochistic sacrifice – safe sex – safe, sane and consensual – safer sex – safeword – saliromania – salirophilia – salpingectomy – salpingitis – same-sex marriage – same-sex partnership – sanitary napkin – sanitary pad – sanitary towel – sanky-panky – sapphic – sapphism – saptha padhi – Sarcoptes scabiei – satan worship – satyr – satyriasis – saucy seaside postcard-sausage party – scabies – scarfing – scarification – scat – scatology – scatophilia – scene ( BDSM ) – scopophilia – scoptolagnia – scoptophilia – scratching ( sexology ) – Screw magazine – scrotal inflation – scrotal infusion – scrotal piercing – scrotal stretching – scrotum – scuba fetishism – second skin – secondary sex characteristic – secondary virginity – secret vice – secular law – seduction – see-through clothing – self-abuse – self-bondage – self-isolation – semen – semen allergy – semen swapping – semen-loss anxiety – semen-loss syndrome – semeniferous tubules – seminal colliculus – seminal plasma – seminal plasma hypersensitivity – seminal vesicle – seminiferous tubules – sensate focus – sensate focus exercises – sensate focusing – sensation play ( BDSM ) – sensory compensation – sensory deprivation – sensory enhancement – sensory overload – sensuality – separatist feminism – septa of testis – septum of the penis – seraglio – serendipitous – serial killing – serial monogamy – seronegative – seropositive – serosorting – serotonin – serous tumor – Sertoli cell – Sertoli-Leydig cell tumor – service-oriented – session wrestler – seven-year itch – sex – sex act – sex addict – sex addiction – sex adjunctive – sex adventitious – sex aid – sex allergy – sex assignment – sex boutique – sex change – sex chromatin – sex client – sex club – sex coaching – sex compulsion – sex cord-stromal tumor – sex crime – sex derivative – sex diet – sex doll – sex drive – sex education – sex flush – sex game – sex hormone – sex 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abuse – sexual acronyms – sexual act – sexual activities – sexual addiction – sexual anatomy – sexual anomalies – sexual arousal – sexual assault – sexual attraction – sexual availability – Sexual Behavior in the Human Female – Sexual Behavior in the Human Male – sexual bondage – sexual characteristics ( disambiguation ) – sexual child abuse – sexual compulsion – Sexual Compulsives Anonymous – sexual confidence – sexual congress – sexual continence – sexual desire – sexual development – sexual deviancy -- sexual deviant – sexual deviation – sexual differentiation – sexual dimorphism – sexual dissatisfaction – sexual drive – sexual dysfunction – sexual equality – sexual ethics – sexual ethnology – sexual exploitation – sexual fantasy – sexual fetish – sexual fetishism – sexual fetishist – sexual fidelity – sexual flush – Sexual Freedom Coalition – sexual frequency – sexual frustration – sexual game – sexual harassment – sexual health – sexual health clinic – sexual history – sexual 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and sexuality – sexually active – sexually dimorphic nucleus – sexually transmissible disease – sexually transmitted disease – sexually violent predator – sexuoerotic – sexuoerotic tragedy – sexuoerotic body image fixation – sexuoeroticism – shaving ( sexology ) – shemale – shidduch – shim-pua marriage – shocker ( hand gesture ) – shoe dangling – shoe fetishism – shotacon – shotgun wedding – showers ( sexology ) – shunga – shyness – side entry missionary position – siderodromophilia – SIECUS – sigheh – significant other – Volkmar Sigusch – sildenafil citrate – Silver Ring Thing – Sin City ( description ) – sindoor – single – single mother – single parent – single status affidavit – singles bar – sinus ( disambiguation ) – sissy – sissy boy – sitophilia – situational child molester – situational sexual behaviour – sixty-nine – size queen – Skene's ducts – Skene's gland – Skene's glands – Skoptzy – slap and tickle-slapper – slapping ( BDSM ) – slave ( BDSM ) – sleep sex – sleeping princess syndrome – sleeping together – sleepsex – sling – sloppy seconds – slut – smegma – smoking fetishism – smotherbox – snapping pussy – snowballing – soapland – social distancing – social host liability-social vice – Society for Human Sexuality – Society for the Scientific Study of Sexuality – sociobiological theories of rape – sodomy – sodomy law – soft butch – soft chancre – softcore pornography – soggy biscuit – soiree-soixante-neuf – solicitation – soliciting – solitary vice – sologamy – solosexuality – somatic – somatotropin – somesthetic – somnophilia – sororal polygyny – sororate marriage – sounding – spandex fetishism – spanking – Spartan pederasty – spay – spectrophilia – speculum – speed dating – sperm – sperm bank – sperm competition – sperm count – sperm donation – sperm donor – sperm motility – sperm sample – spermatic cord – spermatic duct – spermatid – spermatidogenesis – spermatocele – spermatocyte – spermatocytogenesis – spermatogenesis – spermatogonium – spermatophobia – spermatophore – spermatorrhea – spermatozoa – spermatozoon – spermicide – spermiogenesis – sphincter – spinnbarkeit – spinster – spin the bottle-spiritual marriage – spiritual wifery – spit roast ( sex ) – spitting fetishism – splanchnic nerves – splash conception – split beaver – splitting – sploshing – spoiled orgasm – spongy urethra – spoons position – spousal abuse – spreadeagle – squashing of the deckchair position – squeeze technique – stag party – stalking – standing sex position – stapling ( sexology ) – statutory rape – STD – STD clinic – STD testing – steatopygia – stem pessary – stereocilia ( epididymis ) – sterility – human sterilization ( surgical procedure ) – steroid hormones – STI – stigmatic / eligibilic paraphilia – stigmatophilia – stimulus-response theory – Stockholm syndrome – stocking fetishism – Stonewall riots – stop and go exercises – stop-start technique – Marie Stopes – Story of O – strangling ( sexology ) – strangulation – strap-on dildo – Street Offences Act 1959 – street prostitution – streetwalker – stretching ( sexology ) – string bondage – strip poker – strip pub – strip search – stripping – stripping fetishism – striptease – stroma of ovary – stuffing ( fetish ) – stuffing ( sexology ) – subbing – subcutaneous tissue of penis – subfertility – subincision – sublimation – subliminal tape – submission – submission ( BDSM ) – submissive ( BDSM ) – subpersonality – succubus – sugar daddy – supernumerary nipple – support group – surface epithelial-stromal tumor – surgical fetishism – surrendered wife – surrogate mother – suspension – suspensory ligament of the ovary – suspensory ligament of the penis – suttee – suturing ( sexology ) – swara – swayamvara – sweetheart – sweetheart scam – swimsuit fetishism – swing ( sexology ) – swing club – swinger – swinging – swinging both ways – swish – switch ( BDSM ) – switch ( sexuality ) – sworn virgin – Swyer syndrome – Sybian – sympathetic nervous system – symphorophilia – symphysis pubis dysfunction – symptothermal method – synechial membrane – syphilis –

Sexual dimorphism is pronounced ; mature females reach a maximum overall length of, while males reach only.

Sexual dimorphism is also seen in the physiological structures of the body.

Sexual dimorphism exists in all species, with males being larger than females.

Sexual dimorphism is expressed after females reach about ; the female rostrum continues to grow after the male rostrum stops growing, eventually reaching approximately longer.

It is important to know that a consensual fight between two adults is not an assault, but that an individual cannot consent to an Assault with Weapon, Assault Causing Bodily Harm, Aggravated Assault, or any Sexual Assault.

Sexual maturity is reached at 24 – 27 months.

Sexual maturity is reached by 12 months.

The Five Precepts of the Daoist religion include No Sexual Misconduct, which is interpreted as prohibiting extramarital sex for lay practitioners and marriage or sexual intercourse for monks and nuns.

Nancy Friday's book, Men in Love-Men's Sexual Fantasies: The Triumph of Love over Rage claims that swallowing ejaculate is high on the intimacy scale.

# Sexual immorality is forbidden.

Sexual orientation is therefore not considered an issue.

In a 1951 symposium discussing psychiatrist Benjamin Karpman's paper " The Sexual Psychopath ," psychiatrist Emil Gutheil said, " Looking back upon my own experience with so-called psychopaths, I find one characteristic they all have in common, and that is their infantilism.

* Sexual Sadism: the recurrent urge or behavior involving acts in which the pain or humiliation of a person is sexually exciting.

The DSM's Paraphilia NOS is equivalent to the ICD-9's Sexual Disorder NOS.

Sexual arousal in association with objects that were designed for sexual purposes is not diagnosable in DSM-IV ( DSM, p. 570 ).

Sexual selection, a concept introduced by Charles Darwin in his 1859 book On the Origin of Species, is a significant element of his theory of natural selection.

Sexual preference creates a tendency towards assortative mating or homogamy, providing a system by which a group otherwise invaded by diverse genes is able to suppress their effects and diverge genetically.

Sexual reproduction is a process specific to eukaryotes, organisms whose cells contain a nucleus and mitochondria.

Sexual intercourse, also known as copulation or coitus, is commonly defined as the insertion of a male's penis into a female's vagina for the purposes of sexual pleasure or reproduction.

Sexual intercourse between non-human animals is more often referred to as copulation ; for most, mating and copulation occurs at the point of estrus ( the most fertile period of time in the female's reproductive cycle ), which increases the chances of successful impregnation.

Sexual intercourse is also known as copulation, coitus or coition ; coitus is derived from the Latin word coitio or coire, meaning " a coming together or joining together " or " to go together " and is usually defined as penile-vaginal penetration.

Sexual activity using these devices is called protected sex.

**** " Sexual penetration " means cunnilingus, fellatio or any intrusion, however slight, of any part of the victim ’ s body or any object manipulated or inserted by a person, alone or with others, into the genital or anal openings of the body of the victim, whether or not the victim is alive.

Sexual dimorphism in plumage can be subtle, as in the Paperbark Flycatcher, where the female is identical to the male except for a slight buff on the throat ; striking, as in the Chuuk Monarch where the male almost entirely white and the female entirely black ; or non-existent, as in the Tahiti Monarch.

Sexual anarchy: gender and culture at the fin de siècle.

In September 2005, as part of its campaign to demonstrate that the military allowed open homosexuals to serve when its manpower requirements were greatest, the Center for the Study of Sexual Minorities in the Military ( now the Palm Center ), a reported that army regulations allowed the active duty deployment of Army Reservists and National Guard troops who claim to be or who are accused of being gay.

* Sexual fetishism, sexual attraction to objects, body parts, or situations not conventionally viewed as being sexual in nature.

Sexual intercourse can play a strong role in human bonding, often being used solely for pleasure and leading to stronger emotional bonds, and there are a variety of views concerning what constitutes sexual intercourse or other sexual activity.

The term " Sexual Revolution " has been used at least since the late 1910s and is often attributed as being influenced by Freud's writing on sexual liberation and psychosexual issues.

Sexual intercourse plays a major role in bonobo society observed in captivity, being used as what some scientists perceive as a greeting, a means of forming social bonds, a means of conflict resolution, and postconflict reconciliation.

" The hippie movement appeared concurrently in the midst of a rising Sexual Revolution, in which many views of the status quo on this subject were being challenged.

By this time, the recreational or ' fun ' aspects of sexual behavior were being discussed more openly than ever before, and this more ' enlightened ' outlook resulted not just from the publication of such new books as these, but from a more pervasive Sexual Revolution that had already been well underway for some time.

" Sexual experimentation alongside psychedelics also occurred, due to the perception of their being uninhibitors.

Sexual events ( such as sexual touching, sexual intercourse ) were less common than romantic events ( holding hands ) and social events ( being with one ’ s partner in a group setting ).

Sexual harassment in India is termed " Eve teasing " and is described as: unwelcome sexual gesture or behaviour whether directly or indirectly as sexually coloured remarks ; physical contact and advances ; showing pornography ; a demand or request for sexual favours ; any other unwelcome physical, verbal / non-verbal conduct being sexual in nature.

He was charged: ‘ That he, being a man, did on diverse dates between January 1961 and 8 June 1963, knowingly live wholly or in part on the earning of prostitution ... contrary to ... the Sexual Offences Act 1956 .’ Other charges of procuring prostitutes followed, and at Marylebone Magistrate's Court he was committed for trial at the Old Bailey, beginning on 22 July.

Sexual dimorphism is not marked although females are often larger than the males, with coloring and wing appearance varying greatly among the many species, though black is the most common color, with contrasting aposematic markings of orange, red, yellow, or white also being fairly common.

Mr Wilshire voted against homosexual couples being allowed to adopt children in 2002, against the Civil Partnership Bill of 2004, which granted a legal relationship for same-sex couples and against Equality Act ( Sexual Orientation ) in 2007, which outlawed discrimination in the provision of goods, facilities, services, education and public functions on the grounds of sexual orientation.

A formal petition to de-criminalise acts that temporarily injure a consenting adult was filed with the U. K .' s parliament, then in the Criminal Justice and Immigration Act 2008, S. 66 de-criminalised possession of " pornography " which depicts some acts of injurious sex if it involves oneself ( and potentially others, except for those who cannot or do not consent ), with the burden of proof being on the accused ; Spanner Trust noted their happiness with the consent clause in the Sexual Offences Act 2003.

The WHO has conducted a survey of available data and studies globally to assess the extent of this issue and issued a chapter-length report, called “ Sexual Violence ," as part of the WHO ’ s larger 2002 “ World Report on Violence and Health .” The report states that, globally, one in four women will likely experience sexual violence by an intimate partner and one in three girls report their first sexual experience being forced.

The longtime " public face " of these activities was Antony Grey, from 1962 Secretary of both the Albany Trust and the HLRS ( the latter later being renamed the Sexual Law Reform Society ).

Jonathan Dollimore writes that Scruton's Sexual Desire ( 1986 ) based a conservative sexual ethic on the Hegelian proposition that " the final end of every rational being is the building of the self ," which involves recognizing the other as an end in itself.

Sexual dreams, female sexuality, the devil, lust and desire being some of the possible ideas around it.

Unlike at other Scottish universities, the SRC plays a limited role in the social lives of students, those being the purview of the Glasgow University Union ( GUU ) and the Queen Margaret Union ( QMU ), although it does organise RAG ( Raising And Giving ) Week and SHaG ( Sexual Health at Glasgow ) Week, as well as funding some one hundred clubs and societies.

Sexual orientation and gender identity have served a significant role in some video games, with the trend being toward greater visibility of LGBT identities.

Sexual addiction ( sometimes called sex addiction ) is a conceptual model which attempts to explain some forms of hypersexuality — sexual urges, behaviors, or thoughts that appear extreme in frequency or feel out of one's control — in terms of being a literal addiction to sexual activity.