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FTDNA Y-tree branch

I-Z161

I-Z161 is a branch of the FamilyTreeDNA Y tree with 3,543 kits that gave a country, counting all sub-branches. It is most common in these samples: Malta (9.6% of kits), Denmark (3.7% of kits), Switzerland (3.5% of kits). The branch's common ancestor lived about 11k years ago: the FTDNA Discover estimate runs from 9,200 to 12k years ago. YFull has 664 samples in this branch and dates its common ancestor to 10k years ago.

3,543
kits in the branch
with a country given, including all sub-branches
6
on the branch itself
kits whose test did not resolve a sub-branch
25%
Big Y
share of kits with a Big Y test among all kits of the branch, sub-branches included
4
sub-branches
2 with their own page, 2 without
11k years
age by Discover
the common ancestor lived 9,200 to 12k years ago
10k years
age by YFull
common ancestor (TMRCA); the branch split from its parent 11k years ago

Where it is found #

Countries and regions given by the branch's carriers. “Share of branch” is the part of the branch's kits that belongs to the country. “Share of country” is the part of that country's kits that falls into the branch; it is computed only for countries with at least 50 kits.

Where it is found
Country / region kits Share of branch Share of country
United States 635 2.1%
England 600 2.2%
Germany 420 2.4%
Sweden 282 2.3%
Scotland 255 1.8%
Ireland 222 1.0%
United Kingdom 190 2.0%
Norway 112 2.5%
Switzerland 104 3.5%
France 99 1.5%
Netherlands 80 3.5%
Denmark 61 3.7%
Poland 54 0.7%
Finland 45 0.4%
Northern Ireland 40 1.3%
Italy 31 0.5%
Russian Federation 30 0.4%
Czech Republic 29 1.2%
Canada 22 1.3%
Wales 19 0.9%
50 more

The remaining countries and regions (50), 213 kits in total: Hungary 16, United States (Native American) 16, Spain 14, Belgium 13, Mexico 12, Ukraine 12, Malta 9, Portugal 9, Slovenia 9, Austria 8, Bulgaria 8, Australia 6, Brazil 6, Greece 5, Armenia 4, Belarus 4, Cuba 4, Slovakia 4, South Africa 4, Estonia 3, Latvia 3, Serbia 3, Åland 2, Albania 2, Belgium (Wallonia) 2, Croatia 2, Dominican Republic 2, France (Alsace) 2, Iraq 2, Jamaica 2, Lebanon 2, New Zealand 2, Puerto Rico 2, Romania 2, Russia (Republic of Chuvashia) 2, Belgium (Flanders) 1, Bosnia and Herzegovina 1, Canada (First Nations) 1, Colombia 1, Curaçao 1, England (Cornish) 1, Iceland 1, India 1, Indonesia 1, Jersey 1, Kuwait 1, Scotland (Shetland) 1, Spain (Andalusia) 1, Spain (Castile and León) 1, Turkey 1.

YFull

Most common among these peoples #

From YFull samples that gave a mother tongue: the part of a people's samples that falls into this branch. Peoples with at least 3 samples in the branch are listed.

Sub-branches #

Sub-branches that have their own page (50 kits or more). The bar is the kits in the sub-branch with its own sub-branches; the age is when its common ancestor lived.

I-Z165
3,432 · 96.9% 4,500 years
I-L623
71 · 2.0% 4,600 years

2 small sub-branches more without a page: 34 kits. On the branch itself, without a resolved sub-branch: 6 kits.

Surnames #

Surnames that testers entered at FTDNA, over the whole branch with its sub-branches: 225 distinct among 859 kits. FTDNA gives surnames per branch only, with no country attached, so they cannot be split by country.

YFull

The same branch on YFull #

YFull builds its tree from the same SNPs; the node is matched by name or by a shared SNP. TMRCA is when the common ancestor of all samples lived, formed is when the branch split from its parent. Intervals are 95%.

I-Z161: 664 samples. The common ancestor lived 10k years ago (8,800–12k); the branch split off 11k years ago (9,200–12k).