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J2 Y DNA project update

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  • J2 Y DNA project update

    Hello,

    This e-mail is to announce the belated part 2 of the October 2007 update
    (delayed due to health, vacations, & waiting for the (still unpublished) new YCC tree)
    1) The new public results page (see 1. below for more details)
    2) The member map on the public results page has been updated (see 2. below for more details)
    3) Additional information about J2b, J2a-Beta (and J2b-Lambda & J2a-Theta) has been added to the phase three cluster analysis page. This includes distribution maps of the clusters mentioned. We also add some information about J (xM12) haplotypes that have DYS 413 >18.(see 3. below for more details)
    4) A new "hypotheses" page has been added (see 4. below for more details)
    5) Update of the discovery of a secondary DYS 413 deletion event in J2b-Zita (see 5. below for more details)


    1)The new public results haplotype table has been added to the project website.
    http://www.j2-ydnaproject.org/public_hap_table.html
    This results table contains the haplotypes of members who have specifically given their informed consent. Of those members who responded, about 2/3 gave their full consent, and about 1/3 consented only to having their haplotype in the members area (not in the public area).

    We thank all of you who submitted the form, and warmly encourage those of you who have not filled it in yet, to do so.
    This results table will be manually updated with new results on a monthly basis (unfortunately it cannot be automatically updated). It will next be updated in the second week of March 2008.

    2)The member map on the public results page has been updated.
    http://www.j2-ydnaproject.org/public_results.html
    This new version of the map shows members who have SNP test results in grey, blue and red. For the remainder of haplotypes (ie. those that do not have sub-clade results) we have predicted whether they are likely to be J2 M410+ or J2 M12+ (white or pale reddish).

    3)Additional information about J2b, J2a-Beta (and J2b-Lambda & J2a-Theta) has been added to the phase three cluster analysis page.
    http://www.j2-ydnaproject.org/analys...3.html#jan2008
    This includes distribution maps of the clusters mentioned. We also add some information about J (xM12) haplotypes that have DYS 413 >18.

    In this section we also update our investigation into J2b-Delta and its distribution (especially in relation to the British Isles). A year ago, we first examined the apparent association between J2b-Delta and the British Isles. We hypothesized that J2b-Delta might represent a genuine clade, and that we'd need to find a corresponding SNP marker to confirm this hypothesis.
    Preliminary results indicate that If there is a SNP that defines J2b-Delta and/or J2b-Zita from J2b-Alpha (or vice versa) then it is not M241. So far, all non J2b-beta haplotypes that have tested for M241 have received a result of "derived" (ie. positive). The project has yet to see a J2b haplotype confirmed to be negative for both M241 and M205. If there are any M241/M205 negative haplotypes in the project, then the most likely candidates are probably the haplotypes that are currently categorised in J2b-Gamma. However, - it is important to remember that this is only a hypothesis that can only be confirmed with additional testing.

    4) A new "hypotheses" page has been added,
    http://www.j2-ydnaproject.org/hypotheses.html
    This page outlines questions/hypotheses that have been generated by the J2 Y-DNA projects research. We are hoping that FTDNA's new "walk on the Y" can help answer some of these questions (as well as the continued research by Ethnoancestry).

    5) In the October 2007 update we stated that one member in the J2b-Zita cluster received DYS 413 values of 18,23. It was these results which first prompted us to review the validity of DYS 413 as a taxonomic character for the NRY YCC tree. We now have a second member who has tested for DYS 413 who has received the more "normal" results of 21 23. The two members have a genetic distance of 18 at 37 markers (their common ancestor perhaps lived around 3000 years ago, depending on mutation rates).
    We can now be confident that this secondary DYS 413 deletion is not characteristic of the whole of J2a-Zita, but it may still be characteristic of a sub-group of J2b-Zita. We still think it is possible that a result of 18 23 may be found in individuals whom are more closely related to the member who received a result of 18 23.

    Best regards,


    Costa.Tsirigakis -- Founder & Administrator

    Angela Cone -- Co-administrator

    http://www.j2-ydnaproject.org/

  • #2
    Costas:

    very interesting information on J2.

    As you probably know, there's another paper on J2 in Greece, that seems to say something different about J2b than Cruciani. We discussed it in:

    http://forums.familytreedna.com/showthread.php?t=4585
    cacio

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