FamilyTreeDNA holds for Ireland: 22,246 kits with a Y-DNA result and 10,138 kits with mtDNA. On the paternal line the most common are R1b-L151 — 6%, R-DF21* — 5% and R-DF105* — 5%. On the maternal line the most common are J1c — 7%, U5a — 5% and K1a — 5%. YFull has 984 samples for Y from the same area, and its mix of major branches is broadly the same. The largest gap is I-L137: 2% on FTDNA against 5% on YFull.
Detailed pages for each line are linked below the summaries.
Paternal line · Y-DNA
n=22,246 · 24 branches shown
Main branches of the Y tree. Each branch counts every kit in it and in its sub-branches; sub-branches are indented. Age is how many years ago the branch's common ancestor lived (TMRCA).
Most common mt-tree branches, shortened to the form U5a or H13a. Age is how many years ago the branch's common foremother lived, from FTDNA data where available.
Each colour is one of the eight most common macro-haplogroups worldwide (the first letter of the haplogroup, such as R or J). Everything else is grey.RIJENGQTother
FTDNA vs YFull
One country at two companies: solid bar FTDNA, hatched bar YFull, with the difference in percentage points. The 8 most common major branches are shown.
how closely the Y major-branch make-up matches between FTDNA and YFull. 100% is identical, below 80% is visibly different.
I-L137 +3.5
gap to YFull · Y
the Y branch whose share differs most between the two companies: FTDNA 1.6%, YFull 5.1%
25% / 27%
reached the finest branch: YFull / FTDNA
share of YFull samples and FTDNA kits that reached the finest branch of the FTDNA tree. On average a YFull sample sits 43.8 branchings from the root, an FTDNA kit 40.7
27%
Y-DNA · on leaves
share of kits that reached the finest branch of the tree. The rest stopped at a broad branch: their test was not detailed enough.
44%
Big Y
rough share of kits with a Big Y test, a full read of the Y chromosome. It is estimated from the branches where the region's kits sit, so it is an estimate, not a count.
43%
mtDNA · on leaves
share of kits that reached the finest branch of the tree. The rest stopped at a broad branch: their test was not detailed enough.
0.46
mt to Y
maternal-line tests per one paternal-line test. Below 0.3 means the country tests almost only the male line.
Native language reported by YFull customers from this country. People from regions with a page of their own (republics, autonomies) are shown there. These are the testers' own answers, not a census.
Members of this people with both lines known on YFull. For each “Y branch × mt branch” combination, how many times it occurred and how many would be expected if the two lines had nothing to do with each other. Y × mt →n=185
Most frequent combinations
Y × mt: line combinations · Most frequent combinations