do the Results Look Like?
The results of a 25 marker Y chromosome DNA analysis will consist of a series of 25 numbers in the form :-
up to 25. The locus is the position on the Y chromosome that is being measured. The DYS# is the technical identification for that position and the Alleles value is the parameter being measured for your particular Y chromosome. Every man having his DNA tested will have a series of similar figures, 12, 25 or 37 of them, depending on the resolution of the Y chromosome analysis carried out. The Creer DNA study uses 25 marker tests. This set of 25 numbers is your own personal DNA profile or haplotype.
When the results are available from Family Tree DNA they will send you an email containing a link to a page on their website (of the form http://www.familytreedna.com/ftLogin.asp?kit=XXXX&code=SYYYY – where XXXX is your kit number and YYYY is your password). This page will show your results in the form given above – and is effectively your own results homepage. More explanation of what these pages means is given below.
At the same time as you receive
your results, you may also get an email from FTDNA advising you that you match
exactly or closely with one or more other men on their own database. You may be
able to see these matches on your personal page in the section
"Y-DNA Matches"– or you can upload your own results to a
number of public online databases and make comparisons there. One example is
Ysearch – and there is a link on your page to connect with Ysearch and
automatically copy your results there to compare with others. This is easy to
do. (Please contact John Creer is you want details of any others of the public
online Y chromosome databases)
However, at the current stage of knowledge of Y chromosome analysis, it is important to be cautious and not to read too much too quickly into exact or close matches between your haplotype and others on the FTDNA or public databases.
However as more and more results come in from other participants in the Creer DNA study, then it is hoped that some sort of pattern of results will emerge, which will lead to more interpretation and analysis, leading to preliminary conclusions about the genetic connection between different Creer families. This of course will be shared with participants at every stage. This process ultimately may take some time to complete however for several reasons:-
your FTDNA personal page
there is a section entitled "Recent Ethnic Origins". This is a service
provided by FTDNA which compares your haplotype with all the others held in
their internal database, identifies where there is an exact of close match at
both 12 and 25 marker resolution and displays the stated ethnic origins of the
men who match with your haplotype in this way. Again, at this stage, these
comparison should be treated with some caution as only matches at the 25 marker
level with men of the same surname hold any real meaning. However it does
show the ethnic diversity of men with comparable haplotypes. It should also be
noted that the ethnic origin here is that known or remembered by those taking
part, and hence is only subjective and recent.
Anthropologists have tracked the movement of early populations across the earth over the last 100,000 years or so through DNA analysis. As they moved, some of these groups branched off into different continents and their DNA patterns evolved separately. These different evolutions have been mapped and tracked, and the DNA picture classified in terms of haplogroups or clades – i.e. the DNA picture typical of a particular early population at a macro level.
Some of the men in the FTDNA database have had their haplogroup values measured as well, and as part of their service FTDNA compare your haplotype against these others in order to predict what your haplogroup value will be. This is shown on the page named "Haplogroup" at your personal page. It is possible to have this value confirmed by an additional test, but the prediction seems to be pretty accurate when looking at the comparative data. I believe that we Creers will all belong to haplogroup R1b which is typically european. More information is available on your personal page.
Copyright © John A Creer - Webpage last updated on 12/04/2006