By Razib Khan | May 22, 2012 9:28 pm

For genetic genealogy buffs, I highly recommend Gedmatch. It’s been rolling out a lot of new features, including ancestry inference tools from the major genome bloggers. Here is my “chromosome paining” using Zack Ajmal’s reference populations:

CATEGORIZED UNDER: Personal Genomics
MORE ABOUT: Gedmatch
  • Eurologist

    At a cursory glance, it appears that in your example much of Baloch and Caucasian is neighbored by NE European — and vice versa. Question is, is this a weakness of composite reference populations, or does this reflect (i) a mixed population introgression into S India, or (ii) the fact that NW India and much of Pakistan were very early source populations of the Caucasus and Europe…

  • April Brown

    Some enterprising person should sell baby quilts of chromosome painting – get a printer that can print on fabric, load in the baby’s painting, quilt it, then you have a really cool baby present.

    These things are really beautiful and way more interesting than little plaques about the meaning of the kid’s name.

  • Naughtius Maximus

    Apologies if this is a stupid/basic question; does the different size of the blocks represent bigger coverage of each chromosome?

  • Paul Givargidze

    A big thanks to the fella behind GEDmatch. A very useful site.

    @ #1
    “At a cursory glance, it appears that in your example much of Baloch and Caucasian is neighbored by NE European…”

    Where do you see “Caucasian?” I see some tiny bits, perhaps.

  • Simon

    @3, I’m not sure what you mean by coverage, but I think the bars represent the physical size of the chromosomes.

    See the green bar here:

  • Naughtius Maximus

    Simon, yes by coverage I meant size or amount of chromosome analysed.

  • Superfast Jellyfish

    This is very cool–thanks for the tip, Razib! And along with #4, thanks to whoever’s running gedmatch.

  • ackbark

    Here’s mine,

    come for the dull, stay for the generic.

  • Onur
  • Kristen Burroughs

    I visit this site frequently, as well as a couple other genetic sites, and cannot figure out something rather simple — how genes are named. For those of us who are not geneticists or anthropologists, is there a simple explanation?

    I found this:

    Here’s an example: Dwarfism is caused by the FGFR3 gene. To what do those letters and the subscript 3 refer?



  • ackbark


    But adopted, so I’ve no idea, really.

    How do you get North American from that?

  • Paul Givargidze

    I will join in. Hope you do not mind, Razib. Caucasian > Baloch > SW Asian > Mediterranean.

    S-Indian 0.46%, Baloch 20.88%, Caucasian 49.61%, NE-Euro 1.20%, SE-Asian –
    Siberian 0.40%,NE-Asian 0.54%,Papuan 0.09%,American 0.09%,Beringian –
    Mediterranean 8.12%,SW-Asian 18.59%,San – ,E-African – ,Pygmy – ,W-African –

  • Simon

    @10, perhaps the W-African component?

  • Onur

    Ackbark, from your chromosome painting you seem to have a typical NW European genetic profile, but with some addition of very few and small but visible “West African” segments. The possibly Amerindian-related segments might just be noise (as even many Europeans have similar levels of them), but, as far as I know, “West African” normally is not so high (relatively speaking) in NW or NE Europeans. These all point to a US or Canada White background. BTW, may I ask you the percentages of your genetic components?

  • ackbark
  • Onur

    Harappaworld percentages,

    Hmm… your genetics seems indistinguishable from NW Europeans, and no non-White admixture beyond noise levels.

  • ackbark

    Yes, my dna is altogether general and uninteresting. 23andMe tells me there’s no great diseases, no great benefits. I am the standard of caucasoid regularity.

  • Onur

    Do you know anything about your biological parents other than that they are probably ultimately from NW Europe based on your genetic results? You know, there are many companies that offer genealogy services on the web. Maybe they can help you.

  • ackbark

    No, nothing. The closest match on 23andMe’s Relative Finder came in at 0.64%.


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About Razib Khan

I have degrees in biology and biochemistry, a passion for genetics, history, and philosophy, and shrimp is my favorite food. In relation to nationality I'm a American Northwesterner, in politics I'm a reactionary, and as for religion I have none (I'm an atheist). If you want to know more, see the links at


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