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Thread: New Ground for Me: The X Chromosome

  1. #1
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    New Ground for Me: The X Chromosome

    I must confess that I have totally neglected the x chromosome, but it sparked my interest yesterday when I discovered that a close Family Finder and Ancestry DNA match of mine (a female) matches my dad on the x chromosome.

    Her great grandmother and my great grandmother were sisters, and this particular great grandmother of mine is my dad's maternal grandmother. So, evidently my dad's x chromosome came down via his maternal grandmother, as did his mtDNA, and this match got one of her x chromosomes via my great grandmother's sister. I think she should also be a mtDNA match for my dad, but she has not had an mtDNA test yet.

    The maiden surname of these two ancestors is McElroy. Their mother's maiden surname was Nickelson.

    I'm not sure what exactly can be done with the x chromosome, but now I have a reason for looking into it.
    Last edited by rms2; 01-31-2017 at 02:29 PM.
     


    Hidden Content


    Y-DNA: R1b-FGC36982 (L21> DF13> Z39589> CTS2501> Z43690> Y8426> BY160> FGC36974>FGC36982)

    Additional Data:
    Lactase Persistent:
    rs4988235 AA (13910 TT)
    rs182549 TT (22018 AA)

    Red Hair Carrier:
    Arg160Trp+ (rs1805008 T) aka R160W

    Dad's mtDNA: K1a1

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  3. #2
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    Quote Originally Posted by rms2 View Post
    I must confess that I have totally neglected the x chromosome, but it sparked my interest yesterday when I discovered that a close Family Finder and Ancestry DNA match of mine (a female) matches my dad on the x chromosome.

    Her great grandmother and my great grandmother were sisters, and this particular great grandmother of mine is my dad's maternal grandmother. So, evidently my dad's x chromosome came down via his maternal grandmother, as did his mtDNA, and this match got one of her x chromosomes via my great grandmother's sister. I think she should also be a mtDNA match for my dad, but she has not had an mtDNA test yet.

    The maiden surname of these two ancestors is McElroy. Their mother's maiden surname was Nickelson.

    I'm not sure what exactly can be done with the x chromosome, but now I have a reason for looking into it.
    Do you know your maternal haplogroup? I found mine out per Geno 2.0 and had it transferred to FTDNA, but still have to test the coding regions etc. According to FTDNA haplogroup geographical origins for my haplogroup T2b2b - 3x as common in Ireland (17 kits) and 2nd in Scotand (8 kits I think) than anywhere else in the Isles and parts of Europe.

    I plan on fully testing my mother to help sort my autosomal results, as I have recent Scots and Irish on both sides... so to sort them right now is pretty hard (though the ones from Canada most likely from my Mother's family from Ontario etc.).

    There is a nifty male x-chromosome inheritance chart on the web... I filled it out for myself - was interesting to say the least:

    Positions on the X-chromosome inheritance chart:

    position 1: Me - Charlie!

    Position 3: Susan O'Dwyer

    Position 6: Philip O'Dwyer
    Position 7: Lorraine Brownell

    Position 13: Isabel McGuire (1885 New York)
    Position 14: Francis Edward E Brownell (1897 New York)
    Position 15: Alice Mae Wheeler (1898 New York)

    Position 26: Alexander J. McGuire (1860 Trenton, Ontario)
    " 27: Bridget Leavy/Dunleavy (1859 New York)

    " 29: Annie Laurie Clark (1869 New York)
    " 30: Frank A Wheeler (1856 New York)
    " 31: Mary Colway (1862 New York)

    " 53: Jane MacAulay (18 APR 1834 • Murray Township, Northumberland County, Ontario, Canada)
    " 54: Robert Leavy/Dunleavy (1815 Ireland)
    " 55: Margaret Leavy/Dunleavy (1819 Ireland)

    " 58: La Fayette Clark (1822 New York - Clarks were probably Scots further back in time - possible connection to Clan Chattan and MacPherson per another relative's research and family tradition - many Clark men were clergy/parsons)
    " 59: Charlotte Almy Shearman (1826 Rhode Island)

    " 61: Delilah B. Wood (New York)
    " 62: Martin Colway/Cowlay (1825 - probably Dorrah, Tipperary according to surname frequency/census records)
    " 63: Bridget "Dana" Colway/Cowlay (abt 1843 Ireland - Dana recorded as a Gaelic forename/surname in SW Ireland - though possibly from Roscommon per census records)

    " 106: Henry MacAulay (abt 1785 Ireland - possibly Antrim - posslby from Isle of Lewis/Hebrides per autosomal results such as 4th cousin Frasers living in Scotland (two of them) with roughly half their ancestry from Reef in Lewis - and the other half Western Highland ancestry? MacAulays were related to the MacDonalds most likely and married McGuires)
    " 107: Margaret MacAulay (abt 1793 probably Northern Ireland)

    " 109: Robert Leavy/Dunleavy's mother (? Ireland)
    " 110: Margaret Leavy/Dunleavy's father (from Ireland)
    " 111: Margaret Leavy/Dunleavy's mother (from Ireland)

    " 117: Luranna Babcock (abt 1800 New York)
    " 118: Richard Shearman Jr. (abt 1791 Portsmouth, Rhode Island)
    " 119: Sarah Ann Rogers (abt 1799 Middletown, Rhode Island)

    " 122: Delilah B. Wood's father (?)
    " 123: Delilah B. Wood's mother (?)

    " 125: Martin Cowlay's mother (Ireland)
    " 126: Bridget Dana's father (Ireland)
    " 127: Bridget Dana's mother (Ireland)
    Last edited by Bollox79; 02-02-2017 at 01:42 AM.
    Y-DNA: MDKA: 4th GGF Adam Weaver born 1785 in Pennsylvania - Sergeant in US 17th Infantry, War of 1812: R1b-U106-Z381-Z156-Z304/306-DF98-S1911-S1894/S1900-S4004/FGC14818/FGC14823-FGC14816/FGC14817. I share these SNPs w/ Roman "Gladiator or Soldier" skeleton #3 from 6 Driffield cemetery SW of York!

    mtDNA: MDKA: 3rd GGM Bridget Dana circa 1843 in Ireland - MtDNA - T2b2b - most common in Ireland, but with connection to Scandinavia aka T2b female warrior burial Grave Bj 581 near Birka, Sweden.

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  5. #3
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    Yeah, I know my mtDNA haplogroup. It's there on the left below my screen name, avatar, etc.: U5a2c3a. That comes from BritainsDNA's Chromo2. I've only done HVR1 with FTDNA and got U5, although I may go for the FGS with them eventually, since the price has come way down on that over the years.

    Thanks for the info. Amazing that you are able to trace the path of your x chromosome like that. I have not really started investigating it yet. I figured I could work on that a little this coming weekend when I have time.

    I'm not sure how I will trace my dad's x chromosome back beyond his maternal grandmother, since I don't know from which parent she got that particular x and obviously have no opportunity to test her or her parents, who have all been dead a long time. I'll have to give it some thought.
    Last edited by rms2; 02-02-2017 at 12:54 PM. Reason: Omission
     


    Hidden Content


    Y-DNA: R1b-FGC36982 (L21> DF13> Z39589> CTS2501> Z43690> Y8426> BY160> FGC36974>FGC36982)

    Additional Data:
    Lactase Persistent:
    rs4988235 AA (13910 TT)
    rs182549 TT (22018 AA)

    Red Hair Carrier:
    Arg160Trp+ (rs1805008 T) aka R160W

    Dad's mtDNA: K1a1

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    Just looking at my own x matches very quickly (in about five minutes or less), I noticed that a woman who is an x match for my mom on her mom's side is not among them, which tells me the x she passed on to me she got from her father, unless I am mistaken, which is very possible, since I am in a hurry this morning and just took a quick look. Anyway, that's what it looks like, and it's kind of fun trying to figure it out.
     


    Hidden Content


    Y-DNA: R1b-FGC36982 (L21> DF13> Z39589> CTS2501> Z43690> Y8426> BY160> FGC36974>FGC36982)

    Additional Data:
    Lactase Persistent:
    rs4988235 AA (13910 TT)
    rs182549 TT (22018 AA)

    Red Hair Carrier:
    Arg160Trp+ (rs1805008 T) aka R160W

    Dad's mtDNA: K1a1

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     Bollox79 (02-02-2017)

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    Ahh yes your mtDNA was right there lol! If it was a snake it would have bit me in the arse!

    Yeah I still have to do the testing with FTDNA - but at least Geno 2.0 gave me the haplogroup etc. As for my list of x-chromosome inheritance I got that here for a male to fill out. I just put names next to the position numbers etc... and there is another chart just like it, but it has the percentages there instead of the position numbers. NewChart4.jpg

    I was happy to see that apparently my haplogroup does line up with my paper trail to Ireland. I still don't understand the x-chromo bit as much as I do the Y-DNA. That has been my main focus for the last few years. I have to test my father's mother who is still alive and she is 96 years old and tough as nails. One of her grandmothers (I think on her father's side from PA - PA Dutch and all that mixed with Irish) gave birth to a kid on the blanket in the house and then got up and fixed dinner!!! They made them tough back in the day. She is first on my list of testing, then my father's sister and of course my mother! We lost the old man in an accident at work, so I have to try and use his mother and sister to recreate his genome and my mother and my results of course... if that is possible? Something called phasing? Haven't gotten into that yet!

    Good luck on your testing!!

    Cheers
    Charlie
    Last edited by Bollox79; 02-03-2017 at 02:37 AM.
    Y-DNA: MDKA: 4th GGF Adam Weaver born 1785 in Pennsylvania - Sergeant in US 17th Infantry, War of 1812: R1b-U106-Z381-Z156-Z304/306-DF98-S1911-S1894/S1900-S4004/FGC14818/FGC14823-FGC14816/FGC14817. I share these SNPs w/ Roman "Gladiator or Soldier" skeleton #3 from 6 Driffield cemetery SW of York!

    mtDNA: MDKA: 3rd GGM Bridget Dana circa 1843 in Ireland - MtDNA - T2b2b - most common in Ireland, but with connection to Scandinavia aka T2b female warrior burial Grave Bj 581 near Birka, Sweden.

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    Quote Originally Posted by rms2 View Post
    Just looking at my own x matches very quickly (in about five minutes or less), I noticed that a woman who is an x match for my mom on her mom's side is not among them, which tells me the x she passed on to me she got from her father, unless I am mistaken, which is very possible, since I am in a hurry this morning and just took a quick look. Anyway, that's what it looks like, and it's kind of fun trying to figure it out.
    As far as I can tell - and I am a complete and total rookie when it comes to the x chromosome - it does look like my mom passed down to me the x chromosome she got from her dad, and he got that from his mom (obviously), who had the surname Danley, which had the earlier spelling Dannelly. I am shooting from the hip on this, but I noticed one of my mom's x matches has the surname English listed. English was the maiden surname of my maternal grandfather's grandmother. So maybe she was the source of the x chromosome I received from my mother. Like I said, though, I am shooting from the hip on that and have not confirmed it.
     


    Hidden Content


    Y-DNA: R1b-FGC36982 (L21> DF13> Z39589> CTS2501> Z43690> Y8426> BY160> FGC36974>FGC36982)

    Additional Data:
    Lactase Persistent:
    rs4988235 AA (13910 TT)
    rs182549 TT (22018 AA)

    Red Hair Carrier:
    Arg160Trp+ (rs1805008 T) aka R160W

    Dad's mtDNA: K1a1

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     David Mc (02-03-2017)

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    Okay, I have at least confirmed that my x chromosome came via my maternal grandfather and thus from his mother, Missy Danley. I checked out an x match of my mom's who is definitely on my mother's maternal line. She appears as an autosomal match for me but not as an x match. That eliminates my maternal grandmother as the source of my x chromosome, ergo, I must have got the one my mom got from her dad.
     


    Hidden Content


    Y-DNA: R1b-FGC36982 (L21> DF13> Z39589> CTS2501> Z43690> Y8426> BY160> FGC36974>FGC36982)

    Additional Data:
    Lactase Persistent:
    rs4988235 AA (13910 TT)
    rs182549 TT (22018 AA)

    Red Hair Carrier:
    Arg160Trp+ (rs1805008 T) aka R160W

    Dad's mtDNA: K1a1

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     David Mc (02-03-2017)

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    Quote Originally Posted by rms2 View Post
    it does look like my mom passed down to me the x chromosome she got from her dad...
    So this is possible? I had thought it was passed down in a straight matrilineal line (rookie that I am). Thinking about it, it makes sense I suppose, because "why not?" Our mothers carry two x chromosomes... pass one onto us... who is to say which one it will be?

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    I have to say, some FTDNA projects (at least) nudges you into thinking matrilineally when they ask you for your earliest known maternal ancestor.

  17. #10
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    If I recall correctly, a male child can inherit either the X from his maternal father or maternal mother. I know for a fact I received my X from my maternal mothers side, which is 100% southern Italian, because I have barely any X matches. My mom however has over 3000 X matches at 9cM. Which has to be my maternal grandfather, considering he's Slavic and Jewish.

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