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

*** 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 is slight, the male's caudal fin being more pointed.

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 inadequacy – sexual identity – sexual intercourse – sexual intimacy – sexual inversion – sexual jealousy – sexual liberation – sexual lubricant – sexual malfunction – sexual maturation – sexual maturity – sexual medicine – sexual misconduct – sexual morality – sexual mores – sexual network – sexual norm – sexual orientation – Sexual orientation and Wicca – Sexual orientation change efforts – Sexual Identity Therapy – sexual outlet – sexual partner – sexual perversion – sexual perversity – sexual politics – sexual predator – sexual problem – sexual prop – sexual prowess – sexual reassignment surgery – sexual rehearsal play – sexual revolution – sexual ritual – sexual roleplaying – sexual sadism – sexual script – sexual slang – sexual slavery – sexual stimulation – sexual surrogate – sexual tension – sexual trophy – sexual violence – sexuality – sexuality education – sexuality in older age – Sexuality Information and Education Council of the United States – obsessive-compulsive disorder 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 abstinence, also known as continence, refers to abstaining from all sexual activity, often for some limited period of time.

" Sexual orientation disturbance " was also removed and was largely subsumed under " sexual disorder not otherwise specified " which can include " persistent and marked distress about one ’ s sexual orientation.

Sexual activity also includes conduct and activities which are intended to arouse the sexual interest of another, such as strategies to find or attract partners ( mating and display behavior ), and personal interactions between individuals, such as flirting and foreplay.

and also later took a special interest in free love as he participated in the journal The Adult: A Journal for the Advancement of Freedom in Sexual Relationships.

He also had a part in the ABC sitcom Dinosaurs, as Al " Sexual " Harris ( who frequently engaged in sexual harassment ).

It was first published in Sexual Behavior in the Human Male ( 1948 ) by Alfred Kinsey, Wardell Pomeroy and others, and was also prominent in the complementary work Sexual Behavior in the Human Female ( 1953 ).

She was also featured on the Fyre Department remix of " Sexual Eruption " by rapper Snoop Dogg.

He is best known for writing " Sexual Behavior in the Human Male " ( 1948 ) and Sexual Behavior in the Human Female " ( 1953 ), also known as the Kinsey Reports, as well as the Kinsey scale.

The " Resolution on Appropriate Affirmative Responses to Sexual Orientation Distress and Change Efforts " also advises that parents, guardians, young people and their families avoid sexual orientation treatments that portray homosexuality as a mental illness or developmental disorder and instead seek psychotherapy, social support and educational services " that provide accurate information on sexual orientation and sexuality, increase family and school support and reduce rejection of sexual minority youth.

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

Sexual practices that significantly reduce the frequency of heterosexual intercourse also significantly decrease the chances of successful reproduction, and for this reason, they would appear to be maladaptive in an evolutionary context following a simple Darwinian model of natural selection — on the assumption that homosexuality would reduce this frequency.

Sexual partners should also be notified and treated.

In a parallel line of inquiry, Lenkiewicz also investigated some of society's most persistent taboos in Projects such as Jealousy ( 1977 ), Orgasm ( 1978 ), Suicide ( 1980 ) and Sexual Behaviour ( 1983 ).

Sexual acts which are prohibited by law in a jurisdiction, are also called sex crimes.

" Sexual Healing " won Gaye his first two Grammy Awards including Best Male Vocal Performance, in February 1983, and also won Gaye an American Music Award in the soul / R & B category.

It was first published in Sexual Behavior in the Human Male ( 1948 ) by Alfred Kinsey, Wardell Pomeroy and others, and was also prominent in the complementary work Sexual Behavior in the Human Female ( 1953 ).

Universities have also labeled this area of analysis Sexual Diversity Studies, Sexualities Studies or LGBTQ Studies ( Q for " Questioning " and / or " Queer ").

Sexual fantasies are under more or less voluntary control and may also involve strangers, imaginary individuals, and situations that could not take place.