http://tvtropes.org/pmwiki/pub/images/OppositeSexClone.jpg

-->''Oh give me a clone, just a clone of my own''\\
''With its Y chromosome changed to an X''\\
''And when we're alone, just me and my clone''\\
''We'll both think of nothing but sex''\\
''- Isaac Asimov''

While clones and most other sorts of sci-fi duplicates are identical to the original character and, by definition, the same sex, exceptions do exist. The idea dates at least from ''Time Enough for Love'' by Robert Heinlein, where the [[ScrewYourself opposite sex clones become sexual partners]] of the original; nowadays the trope is more used as a quick way of producing a DistaffCounterpart rather than for titillation. Merely being of the opposite sex of his or her original greatly increases the chance of the clone surviving the denouement and showing up in a future story.

Biologically, this is somewhat plausible for male-to-female cloning, because a male has an X-chromosome that can be doubled to produce a female clone (as in Asimov's poem and Heinlein's novel). For female-to-male cloning, the Y chromosome would have to either come from another subject, and thus one would [[{{Ptitlevq7kcn8u}} not have a pure clone]], or be formed from one of the X-chromosomes, which is scientifically bullshit.

See CloningBlues. Compare DistaffCounterpart, HalfIdenticalTwins and ScrewYourself.

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!!Examples:

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[[folder:Anime & Manga]]
* In ''MagicalGirlLyricalNanoha [=StrikerS=]'', [[EvilGenius Uno]] of the [[QuirkyMinibossSquad Numbers]] [[HollywoodCyborg Cyborgs]] was revealed in [[AllThereInTheManual the Sound Stages]] to have been created by [[BigBad Jail]] through cloning, using his own genetic material.
* After accidentally looking into an enchanted mirror, [[RanmaOneHalf Ranma]] creates a copy of his female self. She, of course is infatuated with him. In the end he accidentally copies his male self and the two copies fall for each other. In an anime episode, [[DirtyOldMan Happosai]] attempts to split Ranma into male and female forms for his own selfish reasons. However, he misss the fact that, A: Ranma despises him and would never obey him no matter the form, and B: the incense he uses is called [[LiteralSplitPersonality Personality Splitter]]. The result is an EnemyWithout situation, as the Clone is a vampiric ghost-like entity that is the living embodiment of Ranma's evil.
** A surprisingly large amount of ''[[RanmaOneHalf Ranma 1/2]]'' FanFic is based on the idea of separating Ranma's male and female halves into distinct individuals, often turning them into [[CharacterDerailment very masculine and ultra-feminine]] shades of the original personality. For the most part, they [[{{Squick}} refrain from making them paramours]].
* The civilization in ''SaberMarionetteJ'', which consists entirely of men who reproduce via genetic manipulation and artificial wombs, '''should''' have the technology and know-how to do this, but it simply never occurs to them to remove the Y chromosome from an embryo and replace it with an X chromosome.
* Through the power of cyborg bodies, Sechs in ''{{Gunnm}} Last Order'' becomes the male (or rather [[{{Transsexual}} female-to-male transsexual]]) clone of Gally/Alita.
* The female [[spoiler: Nemu]] is the clone of the male [[spoiler: Mayuri Kurotsuchi]] in ''{{Bleach}}''.
** And the female [[spoiler: Lilynette]] was, while not exactly a clone, created from a fragment of the male [[spoiler: Starrk's]] soul.
*** Acutally, its stated that neither knows who was the original or whether ''either'' ressemble the original.
* In the ''StarshipGirlYamamotoYohko'' TV series, Yohko's male clone, Yousuke appears. [[spoiler: He turns out to be female and in disguise, but then actually becomes male later.]]
* GetterRobo Armaggedon has [[spoiler: Go]], the OSC of [[spoiler: Michiru, who is ''dead''.]]
* In the {{hentai}} {{manga}} ''Alice's Adventures in Sexland'', obviously an erotic retelling of LewisCarroll's book, there was a furniture maker whose furniture was special because it would spring to life and [[IfYouKnowWhatIMean play with the user]]. Her "masterpiece" was a mirror, which sprung a magical clone of Alice, because, as the creator says, ''Who knows best what you like and what you need, [[ScrewYourself if not yourself]]''. Only it wasn't [[{{Hermaphrodite}} an exact clone]]. She does state, however, that the mirror would have given a perfect clone if that was what Alice had wanted.
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[[folder:Comic Books]]
* Spider-Woman, in ''[[UltimateMarvel Ultimate]] Comicbook/{{Spider-Man}}''. Ultimate Spider-Woman has all of Peter Parker's memories and personality traits. So from her perspective, she was a guy who just happened to [[GenderBender wake up with boobs and some body parts missing]] one day. God, it sucks to be Peter Parker.
** [[ManIFeelLikeAWoman Or not.]]
*** You're forgetting that she knows she's a clone, and so she can't be with Mary Jane. It sucks.
**** One could only imagine how sexually confused she must be.
***** Oh, it's much worse than that. Last time I checked, Peter's pal Johnny Storm was hitting on her.
****** Wow, a [[HoYay female version of Peter Parker]] would totally be the answer to all of the Human Torch's relationship problems.
****** Well she ''was'' [[spoiler:scheduled to have her memories modified]] after being created, so it's possibly she was given a bit more of a...feminine personality before bailing.
***** To add insult to injury, she finally saw Kitty Pryde after going through a disaster zone, hugged Kitty and... got the stink eye for her trouble.
* X-23 is an Opposite Sex Clone of Wolverine, developed by Dr. Sarah Kinney as a solution to not being able to recreate a Y chromosome from a sample of Wolverine's DNA. She instead buffed up and doubled the X chromosome, making a "genetic double" that's pretty much what Wolverine would be as a girl. The double X chromosome also explains Laura's green eyes, as green eyes are a double recessive trait. It turns out that female versions of Wolverine's particular mutation grow the claw that normally would extend in the middle of the three claws on the hands out of their feet instead. Or you could think of the foot claw as an attempt to make X-23 slightly original from wolverine. Plus it means she is more inclined to use her legs, because all female super heroes nowadays are ninjas...
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[[folder:Literature]]
* The character of Lazarus Long in RobertAHeinlein's book ''Time Enough For Love'' is the world's oldest living human. At the beginning of the book, he is trying to kill himself by avoiding "rejuvenation therapy", and a squad of his descendants rescue him. He makes a deal with them: he will go through rejuvenation therapy if they can unearth one experience he could do that he hadn't done already. Two of his female descendants arrange for Opposite Sex Clones of him to be implanted in them; both are born, and he finds himself raising twin female versions of himself. They end up sleeping with him by the end of the story. ''Every'' female character in the story sleeps with him. Even the computer (long story) and [[spoiler:his own mother, after he travels back in time]]. He's a [[strike: sexual]] MartyStu.
* Eve was created from one of Adam's ribs, making this Older Than Written Word.
* In TadWilliams' ''{{Otherland}}'' series, one of CorruptCorporateExecutive Felix Jongleur's early attempts to make himself immortal involved cloning. The idea was to have a clone of himself implanted in a surrogate mother. Of course, the clone would only be a genetic copy; the child would need a similar upbringing to his own to produce an effective copy. To this end, Jongleur wanted the surrogate mother to be like his own mother. Unfortunately, he couldn't bring himself to unearth her body... so instead, he made an OppositeSexClone of himself. That's right: he intended to impregnate an opposite sex version of himself... with himself. Very {{Squick}}. Fortunately, the project never went beyond the initial stages because a far more appealing (yet no less unethical) option presented itself, so Jongleur adopted the OppositeSexClone for his daughter.
* Not quite the same, but it's stated in various novels in {{Lois McMaster Bujold}}'s Vorkosigan series that opposite-sex clones are possible, and that the corrupt rich people who choose to have their brains transferred into a younger clone sometimes pick this option (with optional plastic surgery beforehand, to make sure it's a ''pretty'' clone). It's also implied in ''Mirror Dance'' that some people order clones of themselves chiefly for the purposes of sexual experimentation, although the opposite-sex option isn't brought up at that point.
* In the Battletech and Mechwarrior series of books The Clans are a race of supermen and women that are mass-produced in batches from the DNA of their greatest warriors. During their childhood all the clones engage in casual sex with each other to build bonds. This sometimes continues into adulthood; notable examples include the Pryde siblings from the novel Legend of the Jade Phoenix and the Hazen siblings from the Mechwarrior: The Dark Age novels; both from Clan Jade Falcon.
** Diana Pryde, the daughter of the Pryde Siblings is close enough to be considered a gender-swapped clone of Aidan Pryde.
** Maeve Wolf, of the Wolf's Dragoons, is secretly a gender-swapped clone of Jaime Wolf.
* The ''[=StarDoc=]'' series has for a main character Cherijo Grey Veil, who is introduced as the daughter of [[VillainWithGoodPublicity renowned geneticist]] Dr. Joseph Grey Veil. [[spoiler:Later in the series, we discover not only is she a female clone of the good doctor, she was [[ParentalIncest created as a wife for him]]. Basically, he was [[{{Ubermensch}} such an egomaniac]] that he felt only his DistaffCounterpart would be a worthy mate. And he was [[CompleteMonster willing to get laws passed declaring her a non-person]] in order to make sure ''she'' had no say in the matter.]]
* In HouseOfSuns, by AlastairReynolds, the various posthuman clone houses, such as Gentian Line, consist of male and female clones of a single individual.
* In James Patrick Kelly's story "Stonehenge," one of the main characters does this. [[spoiler: Later he turns it into Screw Yourself. At least he eventually has a moral epiphany and is filled with guilt, both about the incest and his selfishness in cloning himself.]]
* ''WarriorCats'': Does Rowanclaw somehow becoming a she-cat for a few books and then turning back to a tom count? I mean, some people apparantly [[CrackPairing pair them together]] ([=RowanclawxFem!Rowanclaw=]. No, really.).
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[[folder:Live Action TV]]
* Rimmer in ''RedDwarf'' tried to go the pervy route with this when he wound up stranded on an unoccupied planet. He screwed up the cloning, though... several times. Even when he got it ''right'', the clone still had his (male) face, but by that time he was a prisoner of his own male clones and thus had bigger problems...
** Is there any actual proof that he got it right? If they have mastered cloning, then that could be where the other clones come from; and the persistence of the idea of "womanhood" and the references to the females could be entirely based on what they think ''should'' be, because of the original Rimmer. This would also explain the "do not look upon hr beauty" line, followed by seeing the male face. (May belong in WildMassGuessing).
** We haven't mentioned the opposite sex versions of the crew in another episode, where Rimmer's female double (AlternateUniverse rather than cloned) comes on to him in a spectacularly unsubtle way, and where Lister proceeds to ''[[MisterSeahorse sleep with and get pregnant by his female counterpart]]''. Although to be fair to Lister, he is marooned 3 million years into deep space with only a male hologram and a super evolved Cat-Man for company, so his options are ''quite'' limited, plus he was very drunk. This episode also featured an obvious joke:
-->'''Arlene Rimmer''': (To Lister) How could you even contemplate making love to yourself?\\
'''Arnold Rimmer''': Well, [[ADateWithRosiePalms why break the habit of a lifetime]].
* In ''DoctorWho'', in the episode "The Doctor's Daughter", a female TrulySingleParent-offspring is made of the Doctor. The relationship between them is presented as father/daughter throughout. The Doctor calls her a "generated anomaly". Donna calls her Jenny and the clone takes it as her own.
** And, incidentally, played by the daughter of the Fifth Doctor, Peter Davison.
*** And, incidentally, SHE'S HOT!!!
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[[folder:Video Games]]
* In the ''StreetFighter'' series, Cammy is a female clone of M. Bison (Vega in Japan). Even though Bison's hair is brown...
** Recessive genes. (...[[JustAddBitch Bitch]].) Do one of those charts for possible combinations, and it's entirely possible, if M. Bison's gene pattern was Bb.
* Viletta in ''SuperRobotWars Alpha/Original Generation'' is a clone of Ingram Plisken.
** The reason Villeta [[CloningBlues 'created']] as [[OppositeSexClone opposite gender]] is because Ingram wants to [[FightingFromTheInside frees himself]] from [[BigBad Judecca's]] shackles, and thus he sent Villeta for guiding [[MainCharacters Ryuusei & others]] to KILL! HIMSELF!
** A variation: Raul and Fiona Gureden in ''SuperRobotWars Reversal'', who were essentially male and female versions of the same person in Reversal. In Original Generations, they were both brought in as HalfIdenticalTwins.
** Kazuma Ardygun gets the short end of both the romantic stick (stuck in an crossover with a lot of Ho Yay Mecha Animes) as his only valid options is his underage sister and his data clone Aria Advance in SRW W
* Incidentally, in Viletta and Ingram's debut story, ''SuperHeroSakusen'', they had the exact same issue as Raul and Fiona.
* Similarly, Vent and Aile in ''MegaManZX'' are treated as the same person, only male/female in the game, but the background information treats them as separate characters.
** As of ''ZX Advent'', Vent and Aile exist [[DistaffCounterpart as separate timelines]], since Ashe and Grey are most certainly not as interchangeable as Vent and Aile were in ''ZX''. Generally, the Aile/Grey storyline is accepted as canon, since it ties into [[spoiler: Albert's story]] much more closely for both, and Vent and Ashe are basically [[FallingIntoTheCockpit incidental to the deeper plot]].
* The ''KingOfFighters'' series has Kula Diamond, one of the many clones of Kyo Kusanagi. In addition to the gender flip, Kyo's powers over fire became Kula's powers over ''ice''.
** The series can be inconsistent about "clones", sometimes using the term to describe unrelated people who have just been altered to be like someone else, and not clones in the normal sense. This makes Kula's status as a clone unclear.
* In ''TheElderScrolls: Morrowind'', Divayth Fyr (a very powerful wizard), made four female clones of himself: Alfe, Beyte, Delte, and Uupse. They're variously described as wives or daughters. Surprisingly this isn't particularly played for {{Squick}}.
** Only because there are no other [[spoiler::sane, uninfected]] characters in his tower to comment on it. The general populace of Morrowind regards all Telvanni magisters as [[MadScientist mad scientists]] (and not without reason), and it's stated in several places that local religious authorities take issue with their mile-long grocery lists of blasphemies and abominations.
** Probably because most wizards in Morrowind are asexual, or in one case probably lesbian.
* Caulder/Stolos from ''AdvanceWars: Days of Ruin'' has his 'daughters', {{Opposite Sex Clone}}s of himself. (No explanation is forthcoming as to why their eyes are of different colours, however.)
* In ''TheSims2'', a cheat can be used to impregnate a Sim by him/herself. Doing this will produce offspring that is a clone of the parent, but it will always be of the opposite gender.
* [[spoiler:Xion]] in KingdomHearts 358/2 Days is actually [[spoiler::a clone of ''Sora'']] .
** [[spoiler:Xion's]] case is a bit iffy. [[spoiler: It's not clear what her real gender is, as her appearance is dependent on whoever looks at her. So to Roxas she looks like Kairi with black hair, while to Xigbar she looks like one of the (male) keyblade knights from Birth By Sleep. She only starts to look like Sora right before her boss fight with Roxas, and for that moment she looks exactly like him, gender and all. Then she reverts to her Kairi-like form after the fight to give a FinalSpeech. Make of that what you will.]]
*** [[spoiler: The secret reports confirm that Xion's ''intended'' for was to be Sora, through absorbing memories of Roxas, but because Sora's most important memories were of Kairi, her form and personna became based on her instead. She looks different to other people due to their memories being reflected through her.]]
* By the time of ''MegaManZero'', the four Guardians were created from ''MegaManX's'' [=DNA=]. One of these Guardians is Fairy Leviathan, ''obviously female''.
** And [[{{Yandere}} crushing on Zero]]. [[HoYay Make of that what you will]].
** Going by the original origin story, ''every single female reploid'' could technically qualify as this trope for X.
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[[folder:Web Comics]]
* Ellen in ''ElGoonishShive''. More than a few scenes make it clear that the classic sex partner idea seriously {{squick}}s both of them. In fact, they keep up a {{masquerade}} of either siblings (which they certainly act the part of) or cousins, depending whom you ask. Furthermore, since Ellen was split off by the [[GreenRocks Dewitchery Diamond]], Elliot can be considered Ellen's father and (since this is ''ElGoonishShive'' and a GenderBender was inevitably involved) her ''mother'' as well. Unfortunately, all of this (plus Elliot's ChronicHeroSyndrome) causes him to treat her like a [[BigBrotherComplex ''little'' sister]] which [[http://www.egscomics.com/?date=2007-06-02 tends to annoy her no end.]]
**Which makes it all the more amusing to see the tables turned when Elliot's [[GenderBender "Chronic Gender Bending Syndrome"]] puts [[http://www.egscomics.com/?date=2009-02-27 Ellen in the role of big sister for a change.]]
* The community-driven interactive fiction ''MSPaintAdventures'' introduces a trio of detectives: Problem Sleuth, Ace Dick, and Pickle Inspector ("pickle" in this context is meant to connote "problem"), who, through spirit quests, are psychically linked with female counterparts of themselves, whom they eventually meet in person and are instantly attracted to. Problem Sleuth gets Hysterical Dame, Pickle Inspector gets Nervous Broad, and Ace Dick, lacking the imagination to think of a female counterpart, simply becomes linked to another male version of himself (albeit one who owns a blonde wig).
* In ''DragonTails'', when Norman the squirrel orders a clone of himself, he marked the gender box with an F (for "Fine the way it is") and got a female clone. The clone is also a child, since this was done with genetics.
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[[folder:Web Original]]
* Mixed with EvilCounterpart in ''AHDotComTheSeries'': the crew's Mirror Universe doubles (who previously appeared having the same genders as the primary crew) inadvertently invent a GenderBender virus and then have to kidnap the primary crew to extract original DNA samples. By the end of the episode in question, they're all cured except Doctor What, who ends up remaining female in subsequent episodes. Given that the counterpart is likely just as big a perv as the original, s/he probably adapted quickly enough. Includes examples of ManIFeelLikeAWoman and lots of {{Squick}}.
[[/folder]]

[[folder:Western Animation]]
* X-23, an eventual CanonImmigrant from ''XMenEvolution'' to the comics.
* Dani(elle) Phantom in ''DannyPhantom'', a CaptainErsatz of X-23.
* ''PowerpuffGirls'': The Rowdyruff Boys, in a twisted-EvilCounterpart way. They aren't so much clones as bargain-basement knockoffs, made when Mojo Jojo imitated the Powerpuffs' creation using more "manly" ingredients. Fans generally consider them romantic counterparts to the girls as well.
**Particularly in fanfiction, though this Troper has seen at least [[http://www.fanfiction.net/s/4594771/1/As_Far_As_Im_Concerned one exception]] to that.
* Each of [[spoiler:Starscream's]] clones in ''TransformersAnimated'' [[MesACrowd represents some facet of his personality]], which includes a female one (who [[YouDoNOTWantToKnow refuses to explain what part of his personality she represents]]).
** [[{{Shipping}} Oh, the fun to be had]] with a femme. To have canon make a femme version is like ''permission'' to write books of FoeYay.
*** Like the lack of one stopped it before. This simply reduces the need for [[SlashFic slash]] a small amount.
* Dr. Finklestein from ''TheNightmareBeforeChristmas'' builds a female version of himself out of body parts around his lab. While not a genetic clone, he does give her a half of his brain, so that counts.
* In a Valentines episode of HouseOfMouse, Ludwig Von Drake deduces that the perfect partner for someone would be an OppositeSexClone. The two can't stand each other, and she breaks up with himself.
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