DNA testing

Furet

My dad is 88% Brithish Isles, 12% Western European, and this is based on the FAMILY FINDER only which is Autosomal, no Y testing has been done yet, his half brother who he shares his mother with has a more varied make up posted in my last message of
92% British Isles
6% Eastern European
3% Western & Central European

So it does pick different bits, but it's always being said too that this particular part of DNA testing isn't 100% accurate

I personally don't look at the Origins part I look at the matches

Furet,

With regards to DNA testing and FTDNA it depends on what your interst is, the "Comprehensive" product will give you results from three testing arena's (eg. Male lineage on Y, mtDNA lineage (female) and Autosomnal -- eg bit gets mix up each generation). However even after spending that amount of money you might end up spending more over time (say if you want to get more in dept testing on your Y-Chromosome lineage)

FURET wrote: »

What would be the difference in the detail revealed by a Y67 test versus more advanced Y DNA tests?

It's all very complicated, ye'd need a couple pints to explain all this

However video might help


At basic level with STR's (37,67,111) you get increased resolution when it comes to matches in FTDNA database (think of it like, 480p, 1080p, 4k), often you will have matches at 37 markers who are not matches at higher levels, this is due to lower resolution match been "false positive"

By default with STR's they only predict your wider Haplogroup, for most Irish men you end up been predicted as R1b-M269 -- which is basically useless as a haplogroup as all western European R1b is basically M269+

What 67 STR's testing often allows though is to look at matches who've done more testing, so for example if you have matches at 67 STR's who are R1b-M222 than more likely you would be R1b-M222+, obviously there are tests that look specifically at haplogroups.

I'm probably going into way too much detail

I just thought of it that my mother is the one I've tested on ancestry and then transferred to FTDNA and this is how her Origins show up

ANCESTRY
REGION APPROXIMATE AMOUNT

Europe 100%

Ireland 84%
Great Britain 10%
Europe West 6%



FTDNA

European 100%

British Isles 96%
Western & Central Europe 4%

So it looks like Ancestry is more detailed in their Origins

Interesting thread I'm a female and and was interested in getting a DNA test - so from reading here, my test will only show up the female results - is that right? Thanks

pinkypinky wrote: »

No: there's 2 types of test you can do: mitochondrial will show female lines only but autosomal will show XY cousin matches in the 1 - 6th range.

Are they matching to a database of people with similar markers and tracing your origins this way or from ancient human remains?

Ancestry probably have one of the larger Autosomnal databases out there, they've passed the 1 million tested in last year or so, and doing fairly heavy advertising, interesting you post your sample to their office here in Dublin.

Seanachai, in general most commerical testing companies do not use aDNA genomes, mainly as these are (a) fairly new (b) not hugely applicable for people looking for ancestry in genealogical time period.

Of course if you do get tested with any of major commerial companies, you can always download raw data and submit it to sites such as Gedmatch, which often included "Calculators" that will at times include ancient samples etc.

FTDNA does allow people to transfer in their 23andme results, this also works for V1 of ancestrydna, but think current version can't be transferred just let. (hopefully they are working on fixing that).

For MtDNA testing FTDNA is place to go (likewise for Y-DNA in men they have perhaps broadest range of tests available)