History Main / InTheFutureHumansWillBeOneRace

* The world of ''Manga/AttackOnTitan'' seems to be leaning this way, but with much bleaker implications than usual. Instead mixing through many generations, several races are implied or outright stated to have gone extinct. [[OneManArmy Mikasa]] in particular is probably the last Asian person on Earth, which nearly made her very valuable to the {{human traffickers}} that planned on selling her into {{sex slave}}ry in her childhood. [[spoiler:It turns out to be an entirely false and artificial situation -- the cast have been living in a self-isolated colony for the last century, with the rulers carrying out Ethnic Cleansing to solidify their power. The rest of the world, as it turns out, has many ethnic and racial groups. This leads to a bit of a FirstContactFauxPass the first time [[CountryMouse Sasha]] sees a Black person and asks about his skin color]].

* The world of ''Manga/AttackOnTitan'' seems to be leaning this way, but with much bleaker implications than usual. Instead mixing through many generations, several races are implied or outright stated to have gone extinct. [[OneManArmy Mikasa]] in particular is probably the last Asian person on Earth, which nearly made her very valuable to the human traffickers that planned on selling her into slavery in her childhood. [[spoiler:It turns out to be an entirely false and artificial situation -- the cast have been living in a self-isolated colony for the last century, with the rulers carrying out Ethnic Cleansing to solidify their power. The rest of the world, as it turns out, has many ethnic and racial groups. This leads to a bit of a FirstContactFauxPass the first time [[CountryMouse Sasha]] sees a Black person and asks about his skin color]].

Needless to say, this entire trope is the worst fear of ethnic supremacists/nationalists. In another way it's their dream come true. Only one race. When this doesn't happen in the future, often writers will address it via explaining that cultures or nations have [[PlanetOfHats settled their own planets]], thus allowing them to maintain common day ethnicity in the far-flung future.

In actuality, this trope is unlikely to come to pass in the way we think of race; while closely-knit populations will often share traits for both genetic and cultural reasons, the color of one's skin is affected by multiple genes (and environment) allowing for a range of shades and complexions. See the Pashtun or Brazillians for the actual result, which is wildly varied looks often within the same family. However, over a long enough time scale the trope can happen. Though unlikely, and without selection an impossible assumption, since there are already ''far'' too many people for the population to reliably interbreed quickly and evenly enough to homogenize the existing races before new races begin to pop up without a concerted effort on the part of ''the entire human species''.

* The world of ''Manga/AttackOnTitan'' seems to be leaning this way, but with much bleaker implications than usual. Instead mixing through many generations, several races are implied or outright stated to have gone extinct. [[OneManArmy Mikasa]] in particular is probably the last Asian person on Earth, which nearly made her very valuable to the human traffickers that planned on selling her into slavery in her childhood. [[spoiler: It turns out to be an entirely false and artificial situation -- the cast have been living in a self-isolated colony for the last century, with the rulers carrying out Ethnic Cleansing to solidify their power. The rest of the world, as it turns out, has many ethnic and racial groups. This leads to a bit of a FirstContactFauxPass the first time [[CountryMouse Sasha]] sees a Black person and asks about his skin color]].

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* In ''Literature/TheForeverWar'', the hero leaves Earth to fight in an interstellar war using a starship drive that causes time dilation. When he returns to Earth it's thousands of years after he left, and everyone on Earth is a nice even tan, with dark hair and eyes. Oh, and [[HetIsEw they're all gay]]. Later taken to its logical extreme, with the entire human race becoming all clones that look completely identical, who also are part of a hive mind.

* In ''Series/StarTrekTheOriginalSeries,'' Khan Noonien Singh has an Indian name and a Mexican accent/appearance, and is the result of an attempt to create genetically superior humans.

* The world of ''Manga/AttackOnTitan'' seems to be leaning this way, but with much bleaker implications than usual. Instead mixing through many generations, several races are implied or outright stated to have gone extinct. [[OneManArmy Mikasa]] in particular is probably the last Asian person on Earth ([[spoiler: or so she thought]]), which nearly made her very valuable to the human traffickers that planned on selling her into slavery in her childhood.

* In ''Literature/TheSpiralWars'', we are informed that most humans are just somewhat brown, but many characters are still specifically one race. The main Character, Erik Debogande, is African, and one [[Pun Major]] character, Major Trace Thakur, is specifically of Nepali ancestry.

* Alluded to in ''Franchise/PlanetOfTheApes''. The apes stuff and display Dodge because they'd never seen a human with dark skin like him.
* In ''Film/{{Bulworth}}'', when Senator Bulworth is on TV in brutal-honesty mode, he suggests that the U.S.A. should engage in "a voluntary, free-spirited, open-ended program of procreative racial deconstruction". Seeing the blank look on the interviewer's face, he re-phrases it more bluntly: "Everybody just gotta keep fuckin' everybody 'til they're all the same color".

* In Ira Levin's ''Literature/ThisPerfectDay'', the "Family" is genetically engineered for perfection--which in this world is an almost stereotypically Asian appearence.

** The "Red Martians" are a genetic admixture of the progenitor races. There are still White Martians in some places, along with Black Martians and Yellow Martians, but they're mostly confined to certain specific areographic regions. There are also ''Green'' Martians, but they're probably a different species. Probably. "Species" seems to have been a concept Burroughs wasn't familiar with, given that the human Carter mates with... and has children by... the oviparous, albeit with distinctive mammalian characteristics, Dejah Thoris, who is a Red Martian.
* ''Race Against Time'' by Creator/PiersAnthony starts out in a 20th-century setting, but later shows the 24th century, where everyone is a muddled brown color and genetic throwbacks with distinct racial features are kept in cultural preserves with a zooish quality to them. [[spoiler:(The protagonist is one such throwback, living in preserve modeled on the 20th century; he starts out believing that he really lives in the 20th century, and learns the truth over the course of the novel.)]]

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* The old-fashioned idea of "[[https://en.wikipedia.org/wiki/Race_(human_categorization) race]]" as five or six distinct HumanSubspecies has been completely rejected by biological science. Scientists are divided on whether the term should be thrown out of biology entirely (one human race) or recycled for something else (dozens or hundreds). Anthropology and sociology still have plenty of use for it as a social construct, though.
* However, there ''was'' a few subspecies of ''Homo sapiens'', including the modern races, as well as ''Homo sapiens idaltu'' ("Elder wise man"), ''Homo sapiens neanderthalensis'' (Neanderthal man, sometimes called another human species), and a few others. These were as different from each other as breeds of dogs, and were classified as separate species until genetic testing cleared it up.
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[[quoteright:320:[[WesternAnimation/SouthPark https://static.tvtropes.org/pmwiki/pub/images/goobacks.jpg]]]]

A science fiction trope, most common in {{Literature}} wherein it's discussed that different races have essentially vanished, and everyone is pretty much within a limited range of color, usually a [[AmbiguouslyBrown medium tan]] so to speak. Contrast with HumansAreWhite, which is basically the opposite idea, as well as the related SocietyMarchesOn.

In actuality, this trope is unlikely to come to pass in the way we think of race; while closely-knit populations will often share traits for both genetic and cultural reasons, the color of one's skin is affected by multiple genes (and environment) allowing for a range of shades and complexions. See the Pashtun or Brazillians for the actual result, which is wildly varied looks often within the same family. However, over a long enough time scale the trope can happen. Though unlikely even without selection an impossible assumption, since there are already ''far'' too many people for the population to reliably interbreed quickly and evenly enough to homogenize the existing races before new races begin to pop up without a concerted effort on the part of ''the entire human species''.

* The world of ''Manga/AttackOnTitan'' seems to be leaning this way, but with much bleaker implications than usual. Instead mixing through many generations, several races are implied or outright stated to have gone extinct. [[OneManArmy Mikasa]] in particular is probably the last Asian person on Earth, which nearly made her very valuable to the human traffickers that planned on selling her into slavery in her childhood.

* The ''Literature/{{Foundation}} Series'' is like this. In ''The Currents of Space'', it's mentioned that people from the two main planets look slightly different, though not different enough to be able to tell for certain which a person is from. Everywhere else is pretty much homogeneous.
** Averted in the case of Trantor, the galactic capital, for example the citizens of the Dahl district all seem to be vaguely Indian (possibly as a pun of Dalit, the untouchables of Indian society who do all the unpleasant jobs), and people from the Imperial district are mostly blond. Humans in general can still be distinguished as Westerners, Easterners, Southerners (i.e. Caucasians, Asians, Blacks) by physical appearance, but no-one at that point knows why physical features are matched with a seemingly arbitrary cardinal direction -- humanity's origins on Earth have long since been forgotten to the mists of ancient history (on hearing the distinctions, Harry Seldon wonders why they are no "Northerners").
** Possibly played for laughs in Isaac Asimov's ''The Currents of Space'', in which one character notes that, since he has very dark skin, and a group of people he is attempting to aid have fair skin, the two must have been equally discriminated against at one time.
** The difference is simply not emphasized in the earlier books, but according to the later ones, there is plenty of difference -- though the different races prefer to live with their own.

In actuality, this trope is unlikely to come to pass in the way we think of race; while closely-knit populations will often share traits for both genetic and cultural reasons, the color of one's skin is affected by multiple genes (and environment) allowing for a range of shades and complexions. See the Pashtun or Brazillians for the actual result, which is wildly varied looks often within the same family. However, over a long enough time scale the trope can happen. Even without selection [[note]] an impossible assumption, since there are already ''far'' too many people for the population to reliably interbreed quickly and evenly enough to homogenize the existing races before new races begin to pop up without a concerted effort on the part of ''the entire human species''[[/note]], neutral genetic drift will cause alleles in the population to tend towards [[http://en.wikipedia.org/wiki/Fixation_%28population_genetics%29 fixation]]. If the ''light'' alleles for some genes fixate, and the ''dark'' alleles for others (or the ''intermediate'' alleles for all of them, if such alleles exist) then you would have a population with a consistently heritable intermediate skin tone. Of course, it's also possible that all of either the dark or light alleles will fixate, but an intermediate result is more likely.

-->--Slave breeder, ''Film/GoodbyeUncleTom''

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* The 70s B-Grade sci-fi series, ''Literature/SpaceWays'', which is set in the far future, has almost all humans with tan to dark skin and brown eyes where natural features like red hair or blonde and blue eyes only exist as rare genetic throwbacks.
* In ''Literature/TheForeverWar'', the hero leaves Earth to fight in an interstellar war using a starship drive that causes time dilation. When he returns to Earth it's thousands of years after he left, and everyone on Earth is a nice even tan, with dark hair and eyes. Oh, and [[HetIsEw they're all gay]].
** Later taken to its logical extreme, with the entire human race becoming all clones that look completely identical, who also are part of a hive mind.

** Averted in the case of Trantor, the galactic capital, for example the citizens of the Dahl district all seem to be vaguely Indian (possibly as a pun of Dalit, the untouchables of Indian society who do all the unpleasant jobs), and people from the Imperial district are mostly blond. Humans in general can still be distinguished as Westerners, Easterners, Southerners (i.e. Caucasians, Asians, Blacks) by physical appearance, but no one at that point knows why physical features are matched with a seemingly arbitrary cardinal direction - humanity's origins on Earth have long since been forgotten to the mists of ancient history (on hearing the distinctions, Harry Seldon wonders why they are no "Northerners").
** Possibly played for laughs in Isaac Asimov's The Currents of Space, in which one character notes that, since he has very dark skin, and a group of people he is attempting to aid have fair skin, the two must have been equally discriminated against at one time.
** The difference is simply not emphasized in the earlier books, but according to the later ones, there is plenty of difference - though the different races prefer to live with their own.

* The second ''Franchise/MassEffect'' novel has a human character looking at the quarians and thinking about how not only quarians but also the various other species tend to look homogeneous. She knows that part of that has to be just that she's unused to those other species and can't pick up on the differences, but even so there aren't serious variations in body size or coloration or anything. Then she realizes that, well, these other species have each become one race, and it's happening to humans too; humans who are purely of any one race are extremely rare.
** This is also mentioned in the first novel about Anderson, who has half-a-dozen ethnical groups as his ancestors, including Caucasian, Indian, African, and East Asian.
* In the ''Literature/JohnCarterOfMars'' series, John Carter says at least twice that he expects this to happen. Considering when the books were written, Creator/EdgarRiceBurroughs must have freaked people out with that one.
** The "Red Martians" are a genetic admixture of the progenitor races. There are still White Martians in some places, along with Black Martians and Yellow Martians, but they're mostly confined to certain specific areographic regions. There are also ''Green'' Martians, but they're probably a different species. Probably. "Species" seems to have been a concept Burroughs wasn't familiar with, given that the human Carter mates with ... and has children by ... the oviparous, albeit with distinctive mammalian characteristics, Dejah Thoris, who is a Red Martian.

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** However, there ''was'' a few subspecies of ''Homo sapiens'', including the modern races, as well as ''Homo sapiens idaltu'' ("Elder wise man"), ''Homo sapiens neanderthalensis'' (Neanderthal man, sometimes called another human species), and a few others. These were as different from each other as breeds of dogs, and were classified as separate species until genetic testing cleared it up.

* ''Anime/TurnAGundam,'' set even ''further'' into the future has a good deal of tanned and generally mixed-race people inhabiting North America alongside whites and blacks. Justified as being the result of generations of interbreeding [[spoiler:following the Moonlight Butterfly apocalypse]].
* The world of ''Manga/AttackOnTitan'' seems to be leaning this way, but with much bleaker implications than usual. Instead mixing through many generations, several races are implied or outright stated to have gone extinct. [[OneManArmy Mikasa]] in particular is probably the last Asian person on Earth ([[spoiler:or more likely the last Asian on the island with the Walled City]]), which nearly made her very valuable to the human traffickers that planned on selling her into slavery in her childhood. [[spoiler: And became somewhat JustifiedTrope since entire "world" is in fact an isolated island neighboring with [[ANaziByAnyOtherName Marley]].]]
* ''Anime/YokaiWatchShadowside'' takes place in the 2040s. While the original [[Anime/YokaiWatch anime]] had a cast consisting mostly of light-skinned brunettes, the extras in ''Shadowside'' show a larger range of skin-tones and hair colours. This suggests the population of Japan has become more diverse in the past 30 years.

* In the 2002 film adaption of ''Film/TheTimeMachine2002'', the Eloi (who are human, rather than being small low-intelligence androgynous creatures as with in the novel) are all played by mixed-race actors, with a kind of medium-brown skin tone. Contrast with the leader of the Morlocks, who is [[EvilAlbino bleach white]]. Possibly justified given that he is a cave dweller.

* In ''Film/FileUnderMiscellaneous'', this trope is justified by the fact that anyone who doesn't fit the (white) norm gets surgery to fit in.

** Although partly averted as well - the clone hive mind recognises the potential problems with the lack of variation, so it protects at least one colony of "original" humans just in case. This is where people like the protagonist, who missed the gradual evolution to a hive mind, end up living.

* Variation: In ''Literature/TheTurnerDiaries'', it's implied via [[FootnoteFever footnotes]] in 2099 everyone on the planet is the same race, that race being white. And yes, it's exactly what it sounds like.

* Averted in Creator/IainMBanks' Culture novels. Humans (or at least HumanAliens, since they're not actually from Earth), have almost complete control over their bodies to the extent of being able to change gender and indefinitely postpone the development of a foetus they're carrying, and even changing species entirely is possible with some help. Skin colour is little more than a matter of fashion, and changing skin, eye and hair colour are some of the smallest changes people make as a matter of routine - in one book it's mentioned that a recent fashion was to have wings.

* Zigzagged in ''Literature/TheExpanse'': while mixed-race people with [[MultiethnicName multiethnic names]] are more common than in the present, especially among Belters, the current races still exist. However, no-one is portrayed to be racist to another human based on their skin color - humans have found new ways to be assholes to each other, mostly based on each others' birthplaces (planet / dwarf planet / moon or space station).

* ''Series/DoctorWho'': [[Recap/DoctorWhoS37E3Rosa "Rosa"]] averts it, as the antagonist is a racist human from the 79th century, suggesting that even by then, human ethnic divisions are still obvious.
* In ''{{Series/Firefly}}'', two main characters are white siblings with the Chinese-sounding last name Tam. Since Firefly takes place in a future that is heavily influenced by Chinese culture, it is implied that they are part Chinese.
** {{Subverted}} overall, which has led to some criticism: the series takes place in a future where the United States and China both achieved interstellar travel, giving the Alliance a blended society. However, you rarely actually see any Asian people; the protagonists are five whites, two blacks and a Brazilian. They occasionally pepper their language with Chinese phrases, but even then it's mostly just curse words.
*** Of course, given the fact they are trying to stay as far from the Alliance as they can get, it's possible that most of the Asian population of the Alliance are located in the more prosperous Core Worlds.
*** And the various world they visit seem pretty much a mishmash of lots of human cultures/ethnicities.
** If, by some caprice, China and the United States ''did'' come to dominate the world in equal measures and began to exchange cultures, many non-Asian Americans could end up with names like "Tam" without having to genetically mix. Since the Chinese language is pictograph-based and thus not very useful in transliterating foreign names, all people who go to live in China or who assume a Chinese identity usually have to adopt a Chinese name, no matter what they look like. There are tribespeople in western China who have blue eyes (the result of intermarriage between locals and a reputed long-lost Roman legion from late antiquity) who have fully Chinese names.

* Averted in ''TabletopGame/{{Traveller}}'' though cultural groupings are different. Most present cultures seem to have assimilated though some are [[SpaceAmish artificially preserved]] but they are recombined into new cultures. Adding to that mix are tons of races of TransplantedHumans.

* Both averted and played straight in ''TabletopGame/{{Warhammer 40000}}''. Many planets in the Imperium of Man have reached racial and cultural homogeneity, but the Imperium as a whole is highly diverse ([[UnfortunateImplications however, non-Caucasian or even part-Caucasian multiracial people ''very'' rarely show up in art for the setting or photography of models]]). On top of baseline humans there are evolutionary offshoots like the Ratlings and Ogryn, as well as straight-up mutant strains running around in the sewers.
** According to some versions of the BackStory, this actually did happen to humanity for a while during the Dark Age of Technology, but during the Age of Strife various populations became isolated from each other for long enough that natural selection caused them to develop into different ethnic groups again. People who expressed more genes from their black African ancestors survived better on the hot planet of Nocturne, home of the Salamanders chapter, while on ice worlds like Valhalla or [[Literature/SpaceWolf Fenris]], selective pressures favored people who more closely resembled ancestors who came from colder parts of Earth, like Russia or Scandinavia. Meanwhile, [[HeavyWorlder high gravity planets]] and other environments that didn't exist on old Earth gave rise to new peoples like the [[OurDwarvesAreAllTheSame Squats]].

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* The protagonist of ''VideoGame/BeyondGoodAndEvil'', Jade, is infamously racially [[AmbiguouslyBrown ambiguous]], but she's far from the only one on her futuristic planet. Quite a number of human characters are tan-skinned and dark-haired in an undefinable manner (and one bald guy who looks like he might be part black and part Asian). Even her AI companion is a weird Spanish/Italian/French mush, and he's a computer program. And then there's [[AmazingTechnicolorPopulation Yoa]]. Going against the usual nature of this trope, though, humanity hasn't become a species of DittoAliens; skin tones and hair colors of all sorts can be found on Hylia. And loads of PettingZooPeople with CanisLatinicus species names. It's just that nobody maps to any contemporary race. It also doesn't help that there's the added filter of cartoon exaggeration and stylization on top of everything else.
* ''Franchise/MassEffect'':
** Played mostly straight, in that it is confirmed that humanity -- at least in North America -- is certainly heading this way, with most human characters you'd define as "white" actually having light brown skin tones, noticeably. This is apparently similar to how years of living as a galactic-scale society has done this to the individual ethnicities of all the other species, and humanity is slowly starting to homogenise as well. May be lampshading how aliens often seem to lack ethnicity in the sort of genre Mass Effect is in.
** In ''VideoGame/MassEffect2'', [[spoiler: the lack of genetic homogenisation in humans is one of the reasons why the Reapers have targeted humanity as the first (or perhaps only) Reaper to be built out of the current galactic races.]]
** Though you frequently meet humans of widely varying skin tones (contrast Miranda's pale complexion with Jacob's dark skin, for instance). This shows up even in random extras and [=NPCs=] with five lines or so, such as Fist and Dr. Michel.
** Human characters also frequently speak with various accents and the Codex says instantaneous machine translation is available, so human beings have united ''politically'' without surrendering their own cultural identity, language, and certainly not without becoming a race of DittoAliens. Likewise, the codex states outright that Turians, Asari, and Salarians at least all identify with their colony, world, clan, and religion even while still falling giving their allegiance to their species and the Citadel Council. Apparently, they are able to spot visual differences and Turians even paint their faces to show their allegiances. More than once an alien comments that "all humans look the same to me," suggesting they cannot spot our racial differences easily.
** Human racists are "speciests" in the game and only dislike aliens. "Human first" characters are generally shown to be sympathetic but in the wrong, as seen in Navigator Pressly's changing attitude in his journals from [=ME2=] and how rebuking Terra Firma, Ashley Williams, and Pressly for these attitudes is a Paragon act. This in-game concept was the subject of a 2.7k word [[https://jitterymonks.com/cultural-diversity-essay-topics-about-social-justice-sociology-and-music/ cultural diversity essay]] by a Harvard PhD student. Human sexism, however, is still present, but every person who displays it is a complete scumbag. Most species heavily stereotype other species, however. Humanity's hat is ambition and how they cannot be stereotyped easily, as pointed out by Moridin, Liara, and others.
** We eventually start seeing other races of the alien species, but they are rare. A brief visit to the asari homeworld reveals that while most asari are nearly the exact same shade of blue, there are also other colors, such as green (distinct from the asari in the first game who were infected by the Thorian) and a deep purple.
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* ''Webcomic/SunsetGrill'' averts this trope by having a huge and equally diverse cast... and not just aliens diverse either. Humans have messed with genetic engineering and there are at least two races that are/were genetically engineered humans.

* This premise was behind a favourite [[http://www.snopes.com/science/stats/blondes.asp dire prediction of futurists]] -- not nuclear war or mass starvation, but that there would be [[EveryoneLovesBlondes no blondes in the future!]] Imagine mankind deprived of Marilyn Monroes! The Horror!

* Inverted in ''WesternAnimation/StarWarsRebels'' where, due to humans colonizing many planets, there are a lot ''more'' ethnicities than on Earth. Ezra's homeworld Lothal has a lot of tan skinned people with dark hair and light colored eyes, Sabine's home planet Krownest tends towards Asian features and tan skin, and Kanan has the darkest skin of the crew but also reddish brown hair. WordOfGod confirmed they all count as "multiracial" by Earth standards, but they and many of the other AmbiguouslyBrown characters are distinct from each other.

* Various {{doomsayer}}s have been predicting the extinction of blondes since the 1800's, including a [[https://en.wikipedia.org/wiki/Disappearing_blonde_gene more recent hoax in 2002]].

* Since the rise in globalization, this might be true sometime in the future.

** However, there ''was'' a few subspecies of ''Homo sapiens'', including the modern races, as well as ''Homo sapiens idaltu'' ("Elder wise man"), ''Homo sapiens neanderthalensis'' (Neanderthal man, sometimes called another human species), and a few others.

** Though it's not mentioned in detail, it seems to mostly be the case in Luna City, where the main character lives. Hong Kong Luna, for instance, is noted for its ethnic Chinese community, among others.

* Played with in the ''Literature/HonorHarrington'' series; while racial mixing is exceedingly common in the setting's 41st Century and generally speaking someone's name or where they're from doesn't necessarily give any indication as to what they might look like, there are exceptions. Manticore's Royal Family, the Wintons are (except for people who join it by marriage), what we'd call black or African. It's implied that the genetic engineering the Wintons carry made their features a dominant trait. Similarly, many planets were specifically settled by people from specific ethnic groups or from locations on Earth, and generally remained isolated for some time, thus in the series present retain recognizable racial groupings. The majority of the population of the capital world of the Andermani Empire, Potsdam, were ethnically Chinese and the planet named Kuan Yin. The Havenite planet of Prague had been originally settled by white supremacists, with a resulting white population. The Mfecane System was settled by ''black'' supremacists, although ironically environmental conditions selected for albinism, so the majority of the population has light skin, light hair, and light eyes with sub-Saharan African features.

** However, there ''was'' a few subspecies of ''Homo sapiens'', including the modern races, as well as ''Homo sapiens idaltu'' ("Elder man"), ''Homo sapiens neanderthalensis'' (Neanderthal man, sometimes called another human species), and a few others.

** The "Red Martians" are a genetic admixture of the progenitor races. There are still White Martians in some places, along with Black Martians and Yellow Martians, but they're mostly confined to certain specific areographic regions. (There are also ''Green'' Martians, but they're probably a different species. Probably. "Species" seems to have been a concept Burroughs wasn't familiar with, given that the human Carter mates with ... and has children by ... the oviparous, albeit with distinctive mammalian characteristics, Dejah Thoris, who is a Red Martian.)

* Played with in the ''Literature/HonorHarrington'' series; while racial mixing is exceedingly common in the setting's 41st Century and generally speaking someone's name or where they're from doesn't necessarily give any indication as to what they might look like, there are exceptions. Manticore's Royal Family, the Wintons are (except for people who join it by marriage), what we'd call black or African. It's implied that the genetic engineering the Wintons carry made their features a dominant trait. Similarly, many planets were specifically settled by people from specific ethnic groups or from locations on Earth, and generally remained isolated for some time, this in the series present retains recognizable racial groupings. The majority of the population of the capital world of the Andermani Empire, Potsdam, were ethnically Chinese and the planet named Kuan Yin. The Havenite planet of Prague had been originally settled by white supremacists, with a resulting white population. The Mfecane System was settled by ''black'' supremacists, although ironically environmental conditions selected for albinism, so the majority of the population has light skin, light hair, and light eyes with sub-Saharan African features.
* Zigzagged in ''Literature/TheExpanse'': while mixed-race people with [[MultiethnicName Multiethnic Names]] are more common than in the present, especially among Belters, the current races still exist. However, no-one is portrayed to be racist to another human based on their skin color - humans have found new ways to be assholes to each other, mostly based on each others' birth planet / dwarf planet / moon / space station.

* In "Film/FileUnderMiscellaneous", this trope is justified by the fact that anyone who doesn't fit the (white) norm gets surgery to fit in.

Another unfortunate problem with the Utopian ideal this implies is that race does not always mean 'skin colour' or 'face shape' - For instance, in South Africa, people who would be considered 'just black' in Western cultures, can be/have been split into the 'Black' and 'Brown' races, even though there is no physical way of differentiating between these two populations.

** Averted in the case of Trantor, the galactic capital, for example the citizens of the Dahl district all seem to be vaguely Indian (possibly as a pun of Dalit, the untouchables of Indian society who do all the unpleasant jobs), and people from the Imperial district are mostly blond. Humans in general can still be distinguished as Northerners, Easterners, Southerners (i.e. Caucasians, Asians, Blacks) by physical appearance, but no one at that point knows why physical features are matched with a seemingly arbitrary cardinal direction.