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Thread: Some Haplogroups updated (August 2018)

  1. #11
    Junior Member

    Hi Rpink - I too have the same haplogroup I-BY526. Since I was adopted I have no clue as to my paternal lineage - perhaps we are related?

  2. #12
    Junior Member

    Quote Originally Posted by Rpink53 View Post
    My haplogroup updated quite a bit, nearly six spots further down the line, I-M223 to I-BY526. I was happy with the results.
    My haplogroup is I-BY526 as well, does that mean we are related at all? I find this very confusing to say the least

  3. #13
    Gold Member Class
    Birmingham, UK
    Indian - Punjabi Jatt
    R2a-M124 > Y1383*

    England United Kingdom India India Punjab
    Quote Originally Posted by Heywyre View Post
    My haplogroup is I-BY526 as well, does that mean we are related at all? I find this very confusing to say the least
    Depends on how you define "related". Let me explain:

    You and Rpink53 coming under I-BY526 (assuming that's the most recent subclade you have in common) means that your paternal lines (Your father, his father, his father, his father etc.) both begin from a common man, who lived somewhere in Western Europe around 2700 years ago (The MRCA of I-BY526. Source: I-Y8935 = I-BY526 btw).

    If you're defining "related" as being genetically related, in other words having common DNA, then it depends if you count a genetic relation as having common autosomal DNA or common Y-DNA.

    I would say I'm more closely related to my maternal uncle (with a lot of common autosomal DNA but a different Y-DNA haplogroup) than somebody with my surname whose paternal MRCA we both share, who lived around 200 years ago (with a distantly related Y chromosome but hardly any autosomal DNA in common).

    I also wouldn't say I'm more closely related to my paternal uncles son (12.5% common autosomal DNA and almost identical Y-DNA) than my maternal uncles son (12.5% common autosomal DNA but different Y-DNA haplogroups). To get the 12.5% figure for my cousins, I'm assuming each parent of mine is 50% related to their brothers, as that's the average, although it can be anywhere between 0% and 100%.

    So if we define "related" as having common autosomal DNA, then we would define "not related" as not having any common autosomal DNA.

    Assuming that one generation is 25 years for simplicity's sake, the MRCA of I-BY526 would be 108 generations away from you. We'll come back to this later.

    You have roughly 6'000'000'000 base pairs of total DNA in your cell (This number does not include mtDNA). Your X chromosome has roughly 155'000'000 base pairs and your Y chromosome has roughly 59'000'000 base pairs, so subtracting these two numbers from your total DNA value will give you 5'786'000'000 base pairs of autosomal DNA. You inherited half of this (2'893'000'000 base pairs) from your father (who is 1 generation apart from you), a quarter of this (1'446'500'000 base pairs) from your paternal grandfather (who is 2 generations apart from you) etc.

    Using the number of generations apart a given ancestor is, we can calculate how much base pairs of autosomal DNA we've inherited from that ancestor by using the equation below:

    where "n" is the number of generations apart that ancestor is and "N" is the number of base pairs inherited by that ancestor.

    Since you cannot have fractions of one base pair, you cease to be autosomally related to an individual when you no longer inherit 1 or more base pairs.

    Putting N = 1 into the above equation (1 base pair inherited by a given ancestor), we would get a value for n of 32.42991917725377 generations. In others words, you have no autosomal DNA in common with an ancestor who is 33 generations apart or more.

    Since the MRCA of I-BY526 is approx. 108 generations apart, it stands to reason that neither you or Rpink53 have any autosomal DNA from that man, and therefore no autosomal DNA in common with each other (assuming that you have no ancestors in common other than the MRCA of I-BY526).

    So to answer your question, you're probably not autosomally related to Rpink53 (you could ask him to compare autosomal DNA if you wanted) and your Y chromosomes are very distantly related (assuming I-BY526 is your most recent common subclade). So I think its reasonable to say no to your question, but in the end it comes down to semantics, I suppose.
    Last edited by aaronbee2010; 09-25-2018 at 08:58 PM.

  4. #14
    Registered Users

    United States of America Japan England Scotland Germany
    Mine updated from R-L48 to one further step downstream at R-Z9. That's the same result Living DNA gave me so ... hooray.

  5. #15
    Registered Users
    San Diego, CA, USA
    British Isles, German

    United Kingdom England England North of England Scotland Ireland Prussia
    Quote Originally Posted by rwtodd View Post
    My v5 I haplogroup terminal SNP went from L22 to L205.1

    Anyone know what the decimal in L205 refers to?
    I just got my dad's result back from 23andMe. Previously, I had I1a1/CTS6364/Z2336 from LivingDNA, so this assessment from 23andMe drops me a few subclades further down, below I-L22. I was actually pretty surprised how refined this test is, compared to what I would have had to pay on Family Tree to get that far down. I'm also very surprised that 23andMe says this haplogroup is relatively common at 1 in 54 testers. I would have thought being this far down the tree there would be far fewer folks who are in this group. Of all the people who tested at FTDNA, there are only like 30 who are at this level or lower. Clearly, the 23andMe database is much bigger, but still...something doesn't seem to be adding up.

    As to the decimal point, who knows? This group is I1a1b1a3 / L205.1/L939.1/S239.1 There seem to be lots of variable ways of categorizing these haplogroups.

    My paternal line traces back to Northumberland, England and perhaps from there into Scotland. Where does your Y line come from?

    Here's the way it looks from FTDNA's breakdown:

    I-M170 (2,917 downstream branches)
    I-M253 (1,804)
    I-DF29 (1,750)
    I-Y2592 (782)
    I-CTS6364 (772)
    I-CTS10028 (635)
    I-S6346 (629)
    I-L22 (608)
    I-Z2338 (502)
    I-L205 (11)

    Possible downstream subclades:
    I-A1463 (10)
    I-A1465 (6)
    I-Y11821 (3)
    I-A5574 (2)
    I-A5572 (1)
    I-A10198 (1)
    Last edited by mxcrowe; 12-24-2018 at 04:56 PM. Reason: added FTDNA phylo tree info
    Latest paper trail:
    Lancashire/Manchester - 21.9%; Northumberland/Durham/Scottish Borders - 15.6%; Scotland - 15.6%; Ireland - 15.6%; Mecklenburg-Schwerin - 12.5%; Somerset/Devon/Wales - 6.3%; Essex - 6.3%; Unknown - 6.3%

  6. #16
    Registered Users
    Jewish & Slavic
    Israel & Russia
    I2a1b - S17250

    Israel Israel Jerusalem Russian Federation Serbia Montenegro
    I was tested on v4, and all I get from 23andme is just I-M423, a haplogroup with TRMCA about 14 000 years.
    (I know about S17250 from another test, not 23andme).

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