Founding An Inbreeding-Free Space Colony

  • Published on Nov 12, 2017
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    How much genetic diversity would we need to found a colony on another planet?
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Comments • 1 299

  • dcd10able
    dcd10able 3 days ago

    I don’t trust 23 and me

  • Sherwyn Lobrigo
    Sherwyn Lobrigo 11 days ago

    Space colonizations are not for LGBTS, its bound to fail.

  • Sherwyn Lobrigo
    Sherwyn Lobrigo 11 days ago

    Space colonizations are not for LGBTS, its bound to fail.

  • Dosity Jones
    Dosity Jones 23 days ago

    Lgbt peeps will call this bigotry 😂

  • roy romano
    roy romano Month ago

    Or genetically modify the brother and sister. So that they can smash... That would be hot, and it would work.

  • Feynstein 100
    Feynstein 100 Month ago +1

    Hang on. Wasn't there a population bottleneck in our history that reduced human population to a few thousand. I remember watching a program about it on Nat Geo.

  • Jefff
    Jefff Month ago

    We will call the colony New West Virginia.

  • Frank
    Frank Month ago

    There are 153 mitochondrial haplogroups on earth. The true minimum number of people for a single colony should be approximately 306 people, assuming each has been screened for all known genetic illness markers and confirmation of fertility. The given population would have the same diversity as the parent group (minus defects) and would stay healthy for much longer if isolated. A regulated breeding program would need to be instituted, implementing embryonic filtration (a technique used in British fertility clinics to eliminated BRCA2 which is an inheritor for breast cancer) until the population was large enough on mars to allow for uncontrolled breeding.

  • awakeness
    awakeness Month ago

    We are all inbreeders

  • Weird Dudes
    Weird Dudes Month ago

    Go to moon first so we can see what we need to do at a closer location

  • Clint Blankenship
    Clint Blankenship 2 months ago

    Easiest way is just to send a diverse couple hundred thousand eggs and sperm with them. by the time we actually send someone tomorrow is, the artificial wombs will be up and running.

  • John Creighton Crowley
    John Creighton Crowley 2 months ago

    I'll have you know that Cleopatra VII was one of the best educated women of her time (in a era that educating women was looked down upon in every civilization outside Egypt) and severely inbred and Albert Einstein married his 1st cousin

  • Michael Skinner
    Michael Skinner 2 months ago

    inbreeding will just introduce All Sorts of Bad. Just watch an episode of RIck and Morty.
    This is why Diversity is Key

  • 王文山
    王文山 2 months ago

    sed frozen egg like the movie interstellar do LOL

  • ace love
    ace love 3 months ago

    I would like to see White people colonizing mars soon.

  • Abdullah Al rawas
    Abdullah Al rawas 3 months ago

    Hey, hi🙋🏽‍♂️🙋🏽‍♂️🙋🏽‍♂️🙋🏽‍♂️ what about introducing crisper to the mix? Will it make any difference?

  • Ever Weaver
    Ever Weaver 3 months ago

    Welp ... Founders law basacly gerenties that some ppls grand pappy could be grandma's father XD (that's some chilling news)

  • Charlie Franz
    Charlie Franz 3 months ago

    Let's see now, that'd be Jethro, Ellie May, Jed, Granny, Ellie's chimp critter, Aunt Pearl, Gomer/Goober, Otis, Earnest T. Bass, Aunt Bea (turds in corset removed), and for an increase in IQ Gov. Huckabee. Perfect for an INBRED Space Colony. The "Dixieland Confederation Colony"

  • Pöpli8
    Pöpli8 4 months ago

    Jebediah Springfield: People, our search is over! On this site we shall build a new Martian colony where we can worship freely, govern justly, and grow vast fields of hemp for making rope and blankets.
    Shelbyville Manhattan: Yes! And marry our cousins.
    Jebediah Springfield: I was- wha... what are you talking about, Shelbyville? Why would we want to marry our cousins?
    Shelbyville Manhattan: Because they're so attractive. I... I thought that was the whole point of this journey.
    Jebediah Springfield: Absolutely not!
    Shelbyville Manhattan: I tell you, I won't live in a Martian colony that robs men of the right to marry their cousins!

  • Uknown Gamer101
    Uknown Gamer101 4 months ago

    Tbh space travel for us is exactly like across sea travel for those hundreds of years ago, information travels slow (radio signals and slow traveling letters) and both are scarcely explored and is scary to travel to. We will be able to communicate in seconds in a few hundred years across planets, and then after we do this, we will have the same situation with travelling to other solar systems, and then galaxies.

  • itsdonaldo
    itsdonaldo 4 months ago

    Inbreeding is gross, unless everybody's sexy.

  • Aaron English
    Aaron English 4 months ago

    Just wondering about 23 and me. I am under the impression that all humans came from one original group, so what's with all this highly discriminatory identification with the places where human migrated to?

    • Pootis Spencer Here
      Pootis Spencer Here 2 months ago

      That group was more than 100k years ago, more than enough time to create diversity through mutation. You can just look at communities where inbreeding occured often, the results are pretty unambiguous. This is not some "random discrimination", it's simply that if you do that, genetic defects will start to pile up, which you don't want to have happen.

  • Chris Human
    Chris Human 5 months ago

    I'm not griping here, Scishow, but i'm thinking you overshot this by a few hundred kilos. If we'd be setting up a colony on, say, Mars it wouldn't be a once off "there you go, now breed". We'd likely have back and forth travel quite a bit. Think back to the colonial age.

  • Fox D
    Fox D 5 months ago

    All the "racial purity" jackasses are inbred themselves...

  • spudthepug
    spudthepug 5 months ago

    Moon first, Mars later.

  • Jaded Cynic
    Jaded Cynic 5 months ago

    In my Victatorship if you aint making disease or unwanted babies sex is healthy and fun. Would not hurt young people to be good at it atall.

  • Sir James W. V. Savile, OBE

    I'm my own grandpa.

  • Thomas Drinkmoore
    Thomas Drinkmoore 6 months ago

    I just had to watch a roundup commercial before your video. You know that you can block certain companies to display commercials before your videos right?

  • Tre Flip
    Tre Flip 7 months ago

    Didnt 23andme give back false information to stump racists?

  • Xavier Rst
    Xavier Rst 8 months ago

    That's one question I always had about people living in an island, how do you not eventually interbreed with your family members at some point in time? Like you'd have to get newer people from the outside to not do that. I think.

  • Prepperjon
    Prepperjon 8 months ago

    I used to live in Utah and you can see the effects of having to small a gene pool. There’s a reason they spell moron with two m’s lol (Mormon)

  • Bader Alaraimi
    Bader Alaraimi 8 months ago

    I thought you were Filipino

  • Travis DeLongchamp
    Travis DeLongchamp 9 months ago

    I was a little confused by why Mars is the example here. Other star systems, sure, but Mars isn't that far away.

  • anshul mehta
    anshul mehta 9 months ago

    In hinduism it is said to marry according to Gautra(ancestry catagory )...people from same gautra are automatically considered as brothers and everyone has to maintain diversity by marrying people from different gautra...

  • David Unkown
    David Unkown 9 months ago

    The problem with these small scale systems is it is essentially forced breeding. The starting crew might all agree to pre-determined selections, but anyone born on the ship will be along for the ride, I wonder if these studies have taken that into account, or they just dont care...

  • Raul Vaquer
    Raul Vaquer 10 months ago

    23andme dont work in Europe btw

  • Wemdiculous
    Wemdiculous 10 months ago

    lowest cost option for martian colonization, send only sperm and females, preferably babies and dwarves. and develope good enough ai so they dont die

  • Jay G
    Jay G 10 months ago

    Hypothesis- Why not send 100-ish young couples, wait 50 or so years, send another wave of 200 people, wait 50 or so years, then maybe send a larger wave of 500 people. Over time, space travel will be more streamlined and efficient, ergo inexpensive, and perhaps the Mars colony will start finding/making things of value there that can contribute to the overall goal of colonizing mars. Eventually you'd have a large enough size on Mars that it'd work out just fine. Say, within 500 years, you maybe be able to send groups of 1000+ humans every 20-50 years, and that's not accounting for when recreational travel between earth and the colony become possible, and interbreeding between the two planets happens. (Sidenote- Planet to planet child support would be one hell of an issue!)

  • Ken Oakleaf
    Ken Oakleaf 10 months ago

    Given current technology, I think it is already kind of silly to worry about this. As mentioned in the video, it wouldn't be hard to send extra genetic material.

  • richard reeves
    richard reeves 10 months ago

    didn't bring up a very big problem in these scenarios ... cheating on your spouse. there have been studies that show that about10% of children are told the wrong guy is their dad. a 10% shift to unknown parentage would be cataclysmic in such a small population.

  • Bear2die4
    Bear2die4 10 months ago +1

    Damn, people are bad enough as it is. Some can't handle humans from another country, let alone another planet. Yeah, we're gonna end up with some serious problems....

  • Seán O'Nilbud
    Seán O'Nilbud 10 months ago

    Now that's something they can test in Tuskegee.

  • BUH lucky
    BUH lucky 10 months ago


  • Sölvi P.
    Sölvi P. 10 months ago

    Greetings from Iceland, and, you're welcome 🙏

  • Tijo Jose
    Tijo Jose 10 months ago +1

    23andMe seems completely useless for non-white people.

  • lesbian_lester
    lesbian_lester 10 months ago

    I thought the title said we found one 😂😂

  • Siam
    Siam 10 months ago

    That means no chinese in space

  • MsTake012
    MsTake012 10 months ago

    Ummm, 23andme? I pay to have my DNA stored in a database and to be later exploited by insurance companies 🤔🤔🤔 no thank you

  • Santos Gomez
    Santos Gomez 10 months ago

    It's why we have to have a large genetic pool. In the world. We need each other for keeping up. Generations

  • coc0s
    coc0s 10 months ago

    In case it doesn't work pack a good supply of banjos.

  • Flying Tanker
    Flying Tanker 10 months ago

    I would think that they would have relationships but have a complex web showing who will “mate” with who so you can love one person but have to breed with someone else.

  • Driver Nephi
    Driver Nephi 10 months ago +1

    23 and me is a insurance trick so that the companies can jack up rates based on your genetics.

  • Skitches
    Skitches 10 months ago

    why don't salmon have a problem with inbreeding

  • Boxes Satans
    Boxes Satans 10 months ago

    The guy's nose is pointing the other way of his face...

  • CursedSound
    CursedSound 10 months ago

    Lets have sex... for science

  • Joshua Slowpoke
    Joshua Slowpoke 10 months ago

    I’ve heard estimates as high as 500,000 being required to maintain genetic diversity. But if only several tens of thousands are required, is it possible such a colony could survive starting with 200,000?

  • jay pee
    jay pee 11 months ago +1

    That was really interesting. Also, I haven't watched scishow in a while... really like this new guy and his mature handing of the subject.

  • Jenny Simon
    Jenny Simon 11 months ago

    Can u tell that to Islam? It's 'god's way' to marry your first cousin. Causes violent irrational rage and mental retardation in just one generation. It also piles up. The UK has such a problem they launched a public health awareness campaign to pretty much fail. Maybe so many ppl would stop trying to blow themselves and other ppl up. This is a major problem and it's all our problem as it's Earth's gene pool.

  • Алексей Алексеев

    Всех "халявщиков", зеков, богачей, правителей и Собчак отправляйте на Марс, пусть плодятся там!

  • Jaylafae Klinger
    Jaylafae Klinger 11 months ago

    23 and me should pay YOU for your genetic information since they will sell it over and over and over for researchers, the government, or whoever has enough money to get what they want. Selling your genetic information is a bad idea unless you have sound proof that they will destroy what you gave them and all the data alone with it.

  • photondance
    photondance 11 months ago

    OH NO! I was supposed to sPit in that vial? I guess I read that wrong. 😬

  • Miles Huff
    Miles Huff 11 months ago

    Easy: send them up with a big bag of mixed sperm.

  • kirby march Barcena
    kirby march Barcena 11 months ago

    They should be more worried of infertility than inbreeding.

  • BertyFromDK
    BertyFromDK 11 months ago

    Yay it's Stefan! :D

  • Craiven
    Craiven 11 months ago


  • Mateo Andres López Barrientos

    I guess we’ll cross that bridge when we get there?......let’s get to mars first

  • hoosierhiver
    hoosierhiver 11 months ago

    That explains why trailer park people have that look.

  • Marcus Taber
    Marcus Taber 11 months ago

    Iceland is in europe like greenland is too right?

  • avicohen2k
    avicohen2k 11 months ago

    Thinking about old world problems for new world situations. By the time we start an off world colony we could probably modify genetic babies and fix issues caused by inbreeding. Heck we might not even reproduce the classic way.. by the time we start that colony inbreeding shouldn't be a major issue.

  • Jørgen Lervik
    Jørgen Lervik 11 months ago

    Genetic engineering. Haven't watched the video yet, but biotechnology. Just change the genes.

  • Shawn Wesley
    Shawn Wesley 11 months ago

    I think you could get away with a relatively small group, you'd just need to send another group within a generation. Even if it takes longer than that to reach the destination, you could have two or three voyagers occurring one after the other, offset by 15 to 20 years, each time improving the genetic diversity while also cutting the cost of each individual journey and spreading that cost out over decades. This would have the added benefit of also delivering extra supplies with each group.
    On the downside, if the overall journey is greater than a generation or two, then the follow-up groups would have no idea what to really expect and whether or not those sent before them had survived to build a colony to arrive at.

  • beth98362 R
    beth98362 R 11 months ago

    An embryo transfer would solve that problem!

  • Kevin Gomolchak
    Kevin Gomolchak 11 months ago

    Make sure nobody decides to answer any distress calls, and then send a landing party full of idiots.

  • Click Bateman
    Click Bateman 11 months ago

    Can't you just have low genetic diversity with inbreeding if you did in-vitro fertilization? Just inbreeding out traits? I know that is gross, but if people had the facilities and removed the social stigma it could work. Granted you would probably have to destroy a whole lot of technically viable embryos to allow for genetic drift. Sounds better than extinction, I suppose.

  • GeraldoSepulveda
    GeraldoSepulveda 11 months ago

    Show about in breeding..... sponsored by a chromosome company jajajajaj

  • Maharshi K Desai
    Maharshi K Desai 11 months ago

    But.......Incest is wincest

  • Gaysian_american
    Gaysian_american 11 months ago

    Just send a bunch of diverse ethnically mixed women with a few pounds of sperm gathered from hundreds of remote tribes.

  • Lucho-Core
    Lucho-Core 11 months ago

    I'm gonna say it without checking the rest of the video, then see if my idea was there:
    Cryogenic-stored sperm/egg bank! it would get periodical "refills" from earth. heheh :D
    EDIT: YAAAAAY! I'm smart! :V

  • Lucho-Core
    Lucho-Core 11 months ago

    First I read the title as "inbreeding free-space colony"

  • ObstTube
    ObstTube 11 months ago

    Oops, page not found!

  • rngwrldngnr
    rngwrldngnr 11 months ago

    Every time I see this video in my feed I have to remind myself that it isn't an Isaac Arthur video.

  • Stanley Chang
    Stanley Chang 11 months ago

    This isn't real problem tbh. We'll probably perfect human genetic engineering before being able to self-sustaining space colony.

  • Bad End Happy
    Bad End Happy 11 months ago

    Can't you just genetically engineer all the genetic flaws/disease-causing alleles out of the population BEFORE your send them there?

  • Darren Paris
    Darren Paris 11 months ago

    Could the Icelandic genealogical database be contributing to their remarkable health as compared to similar countries?

  • Fred K
    Fred K 11 months ago

    Send only women and a sperm bank, problem solved.

  • Glenn Bellomo
    Glenn Bellomo 11 months ago

    Send only women and gallons of frozen sperm.

  • skully70
    skully70 11 months ago

    You don't mention any info regarding monogamous vs polyamorous relationships.
    In Star trek: TNG bring up an episode regarding this topic and the in episode result said that each female required to have 3 kids from 3 different fathers in order to avoid inbreeding.
    At the very least, you should discuss how this affects the minimum numbers
    *This is officially the nerdiest Facebook message I've ever posted.

  • Flat FlatSpin
    Flat FlatSpin 11 months ago

    I thought the number was 500 people, when none are related to start with.

  • J M
    J M Year ago

    Adam and Eve didnt breed cripples. Suck on that science!

  • mr_ byebye
    mr_ byebye Year ago

    That genetic testing only says where you could be from based on genetic markers that they think are more common in certain areas so it's not very accurate

  • franklin radcliff

    I'd consider using 23andme's service if they didn't share that genetic info with police and intelligence communities.

  • Life Happens
    Life Happens Year ago

    Nice video about a fascinating subject! I have a terminology quibble.
    "Effective population size" doesn't at all mean what you say. The concept you're going for - a lower bound on the population size needed to avoid inbreeding depression - might be better described as "minimum viable population".
    Effective population size is a property of a population (any population, whether it's viable or not). It's a rather abstract way of measuring population size, taking into account (among other things) the number of reproductively mature individuals and the sex ratio. The point of effective population size is that it better captures how a population behaves genetically than simply counting the number of individuals (which is called the "census population size").
    Effective population size is always at least somewhat smaller than census population size. So the way you'd use it in the context of space colonization would be, for example: "we have 1000 people on Mars right now, but many of them are children, so our effective population size is closer to 400".
    It'd be great if you could add a correction note to the video, this is a very central population genetic concept that a lot of people have trouble with! :)

  • Nusheen Tarannum Sara


  • ceojr1963
    ceojr1963 Year ago

    Laughs, but we all know we only came from two individuals................. but if they were prefect humans what is to say that is not correct, we now do not know what prefect is..... we are now just breaking at 100 years old, not at 1,000 years old... food for thought.

  • ceojr1963
    ceojr1963 Year ago

    And then you get indiana amish with longer lifespans, and less diabetes.....we think we know a lot then find out we don't..

  • Hieu Nguyen
    Hieu Nguyen Year ago

    Answer is sperm bank. Free freezing in space too

  • john smith
    john smith Year ago

    why not just clean the populations DNA with CRISPR.

  • John Doe
    John Doe Year ago

    23 and me the one that costs 3 x more than ancestry for the exact same thing

  • No You're A Banana

    The problem with NASA getting a colony first is all the genes will originate from Ohio

  • Aaron McLaughlin
    Aaron McLaughlin Year ago

    I wonder if that's how or why the tradition of arranged marriages started?