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RegularJoe@lemmy.world to science@lemmy.worldEnglish · 1 天前

Doppelgängers Don't Just Look Alike—They Also Share DNA. New research finds genetic and lifestyle similarities between unrelated pairs of “virtual twins”

www.smithsonianmag.com

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Doppelgängers Don't Just Look Alike—They Also Share DNA. New research finds genetic and lifestyle similarities between unrelated pairs of “virtual twins”

www.smithsonianmag.com

RegularJoe@lemmy.world to science@lemmy.worldEnglish · 1 天前
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Doppelgängers Don't Just Look Alike—They Also Share DNA
www.smithsonianmag.com
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New research finds genetic and lifestyle similarities between unrelated pairs of "virtual twins"
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  • ChillCapybara@discuss.tchncs.de
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    14 小时前

    Researchers say the findings may also someday help police investigators conjure up the faces of suspects from their DNA samples. But that potential application wades into murky ethical territory

    There it is

    • applebusch@lemmy.blahaj.zone
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      8 小时前

      Yeah I’m sure it will never make a mistake or be relied upon as the gospel of jesus like you see with, oh idk every single piece of technology used by police provided it aligns with their existing bias at the moment

      • Corkyskog@sh.itjust.works
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        3 小时前

        Find a dozen people who look like suspect. Do DNA analysis on dozen “doppelgangers”. Take DNA from “doppelganger” that is the closest match, present to court using “expert” witness.

  • ssfckdt@lemmy.blahaj.zone
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    12 小时前

    This kinda feels like a “duh.” Or a “Well, makes sense”

    • dovahking@lemmy.world
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      3 小时前

      Genetics, I can understand. But lifestyles? How?

  • kerrigan778@lemmy.blahaj.zone
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    12 小时前

    Bad news for people that look like famous serial killers.

    • Tiral@lemmy.world
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      9 小时前

      So that’s why I want to make people lamp shades so bad? /s

  • hypna@lemmy.world
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    15 小时前

    If different people with similar visual characteristics have similar behavioral characteristics, doesn’t that imply that perhaps we can judge a book by its cover?

    • Little8Lost@lemmy.world
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      7 小时前

      Yes but how much?

  • rainbowbunny@slrpnk.net
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    14 小时前

    How similar is DNA from convergent evolution animals?

    • MinnesotaGoddam@lemmy.world
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      10 小时前

      I mean, my uncle (who spent very little time with his bio father) has all the same mannerisms as him. As do I and my mother and one of my brothers. Some of it is that we inherited similar skeletal structure so our posture is similar. Some of it, I dunno.

    • GreenKnight23@lemmy.world
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      13 小时前

      well, at some point, everything is a crab.

      so I would assume pretty similar.

      great question though.

  • Skankhunt420@sh.itjust.works
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    15 小时前

    I’ve wondered this about people who act the same. They also tend to have some of the same facial expressions and mannerisms.

    Maybe like our brains have certain tempaltes of personalities that we alter along the way. A starter personality of sorts.

    • MinnesotaGoddam@lemmy.world
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      10 小时前

      I mean there’s this town in rural [state my family had a farm in but now we don’t hallelujah farm work is hard] that everyone looks like me because, well, go back far enough and all 500 of them and me are related. First time I went to the old farm it was frightening. Like walking into a clone factory.

    • Impractical_Island@lemmy.world
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      12 小时前

      There are only so many permutations of topological entanglement!

      7 colors × 6 directions = 42 types of individual entanglement within the topological matrix we are not IN but rather ARE

  • ∟⊔⊤∦∣≶@lemmy.nz
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    1 天前

    Strange, almost like phenotype is dependent on genotype?

    • Azzu@lemmy.dbzer0.com
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      1 天前

      You’re telling me people whose genetics make them look similar have similar genetics???

      • ChicoSuave@lemmy.world
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        24 小时前

        Big, if true

        • billionsandbillions@piefed.social
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          22 小时前

          Colossal, if legitimate

          • slampisko@lemmy.world
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            18 小时前

            Gargantuan, if verifiable

            • TheUnicornOfPerfidy@feddit.uk
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              16 小时前

              Humongous, if credible

              • Impractical_Island@lemmy.world
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                12 小时前

                Leviathianic, if decipherable

      • lazynooblet@lazysoci.al
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        21 小时前

        Does that mean you could guess a person’s personality from just their look?

        • hateisreality@lemmy.world
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          20 小时前

          Well not their face, but definitely the shape of their skulls!

          • FudgyMcTubbs@lemmy.world
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            18 小时前

            Of course you’d say that. You have the brainpan of a stagecoach tilter!

    • chuckleslord@lemmy.world
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      19 小时前

      Yes, but it’s not necessarily the only way that would work. So this is very neat!

    • Kairos@lemmy.today
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      20 小时前

      It is still interesting. I wonder if epigenetics plays a larger role, or if face look is tied to other random traits.

  • HubertManne@piefed.social
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    16 小时前

    I always wondered about this in terms of I have known some types of folks that look similar and actually often have similar social traits and this includes me to.

  • NullPointerException@lemmy.ca
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    1 天前

    DNA has a limited number of genes. Considering the enormous amount of functions they need to encode, the number of genes for each function becomes relatively small. 8 billion people and thousands of generations, we’re bound to have duplicates.

    • Brocon@lemmy.world
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      1 天前

      I would say it’s even smaller in number. Because some combinations would not work and might kill you.

    • frongt@lemmy.zip
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      23 小时前

      That’s not exactly true. A lot of DNA is redundant, and a lot of DNA is dead code that doesn’t do anything.

      • jaycifer@lemmy.world
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        20 小时前

        Since you’ve only been told that you’re wrong, and I was also under the impression that there was a lot of junk DNA in our genome, I did a little digging and found this article that explains the progression of our understanding pretty well: https://www.sciencenewstoday.org/human-dna-98-of-your-genetic-code-is-junk-or-is-it

        The TLDR is that the original junk DNA hypothesis is based on the fact that only ~2% of DNA is actually used in mapping out protein-construction. That was generally supported by the science from the 70’s to the early 2000’s. What scientists have found in the decades since then is that a lot of what DNA does involves regulating activity in the cell and responding to changing circumstances.

      • Staff@piefed.world
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        22 小时前

        Is it really dead code, or we haven’t found out what it does?

      • porous_grey_matter@lemmy.ml
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        21 小时前

        That’s a very outdated idea.

  • OldGrayDog@fedinsfw.app
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    23 小时前

    Or maybe we’re living in a simulation and whatever is generating it only has a finite number of characters. 😲

  • Crozekiel@lemmy.zip
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    18 小时前

    Why didn’t they give FB-007 shirts?

    • RegularJoe@lemmy.worldOP
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      18 小时前

      Any qualified 007 could report to Q for cutting edge clothing and gear?

  • Venia Silente@lemmy.dbzer0.com
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    1 天前

    …We all look like 98% similar.

    • EntheoNaut@lemmy.ml
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      1 天前

      they all look the same…

      thinks some alien, prolly

      • Ageroth@reddthat.com
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        21 小时前

        They’re made out of meat

        • EntheoNaut@lemmy.ml
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          20 小时前

          I love this short story!

  • Not_mikey@lemmy.dbzer0.com
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    17 小时前

    So should you avoid having kids with someone you look similar too then? Like is it that the virtual twins have genetic similarities akin to 3rd cousins or siblings…

    • Impractical_Island@lemmy.world
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      12 小时前

      This is why my sister and I always use protection.

    • KairuByte@lemmy.dbzer0.com
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      13 小时前

      I mean, iirc there’s no genetic reason first cousins shouldn’t have kids, I doubt third cousins would be a problem.

      • vaultdweller013@sh.itjust.works
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        12 小时前

        First cousins not having kids is generally good since it prevents the founder effect from getting too bad or long term inbreeding like with Charles of Spain or really any European royal.

    • HubertManne@piefed.social
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      16 小时前

      Thats plain rediculous. How can I possibly find someone good enough looking then?

  • Vereesh@masto.ai
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    1 天前

    @RegularJoe I’m curious about how this might work across ethnicities. I can’t point to a photo, but several times, I’ve noticed people from other continents who could easily be someone I know here, except they’re African, or Asian, when the person I know is white, just for example. Under the expected differences in hair, eyes, etc, the basic facial structure is the same. A DNA match seems less likely in these cases.

    • RegularJoe@lemmy.worldOP
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      18 小时前

      I don’t have a great answer other than of the 32 studied, these were their stratification:

      Related to population stratification, among the 16 look-alike pairs, 13 were of European ancestry, 1 Hispanic, 1 East Asian, and 1 Central-South Asian.

      Source: https://www.cell.com/cell-reports/fulltext/S2211-1247(22)01075-0

      But whether people who look close enough to perform as another, such as the “Chinese Obama” (Xiao Jiguo) I can’t say.

      https://www.nbcnews.com/news/china/chinese-president-barack-obama-lookalike-xiao-jiguo-charges-1-500-n444251

      Then there’s Indonesia’s former president, Joko Widodo:

      https://nextshark.com/people-love-indonesias-president-looks-like-barack-obama

      It would be interesting to get the researchers to analyze their DNA.

      • Vereesh@masto.ai
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        11 小时前

        @RegularJoe thank you! This is quite interesting. I’d forgotten about the celebrity look-alikes you mentioned. I’m not surprised the studies aren’t there.

    • borth@sh.itjust.works
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      1 天前

      I don’t think it’s about a DNA match. Those people you mention could share more DNA than the rest of us, which could account for their similarities, but their DNA will never “match” anyone else’s.

      • Smeagol666@crazypeople.online
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        22 小时前

        All humans are within 23 degrees of being cousins. The thing that surprised me most is that sub Saharan Africans are the most diverse genetically speaking.

  • KulunkelBoom@lemmy.org
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    15 小时前

    It is, after all, a smallish planet. Bound to be some duplication.

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