FTDNA Y-tree branch

I-Z73

Equivalent branches, the same kits: I-FGC79287 (1,612 kits, 3,700 years)

I-Z73 is a branch of the FamilyTreeDNA Y tree with 1,612 kits that gave a country, counting all sub-branches. It is most common in these samples: Sweden (8.5% of kits), Norway (6.0% of kits), Finland (1.2% of kits). The branch's common ancestor lived about 2,100 years ago: the FTDNA Discover estimate runs from 1,800 to 2,400 years ago. The oldest of the equivalent branches, I-FGC79287, split off about 3,700 years ago by Discover. YFull has 430 samples in this branch and dates its common ancestor to 2,100 years ago.

1,612

kits in the branch

with a country given, including all sub-branches

on the branch itself

kits whose test did not resolve a sub-branch

22%

Big Y

share of kits with a Big Y test among all kits of the branch, sub-branches included

sub-branches

1 with their own page, 2 without

2,100 years

age by Discover

the common ancestor lived 1,800 to 2,400 years ago

2,100 years

age by YFull

common ancestor (TMRCA); the branch split from its parent 3,800 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
Sweden	1,035	64.2%	8.5%
Norway	271	16.8%	6.0%
Finland	119	7.4%	1.2%
England	41	2.5%	0.1%
United States	40	2.5%	0.1%
Russian Federation	22	1.4%	0.3%
Scotland	21	1.3%	0.1%
Ireland	17	1.1%	<0.1%
United Kingdom	14	0.9%	0.1%
Germany	7	0.4%	<0.1%
Denmark	6	0.4%	0.4%
Northern Ireland	4	0.2%	0.1%
Estonia	3	0.2%	1.0%
Poland	2	0.1%	<0.1%
Sápmi (Sámi)	2	0.1%	·
Belarus	1	0.1%	<0.1%
Canada	1	0.1%	<0.1%
Iceland	1	0.1%	0.5%
Isle of Man	1	0.1%	0.7%
Netherlands	1	0.1%	<0.1%

3 more

The remaining countries and regions (3), 3 kits in total: Ukraine 1, United States (Native American) 1, Wales 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.

Swedes: 31% of samples (58 of 187)
Russians: 0.6% of samples (5 of 821)
English: 0.4% of samples (4 of 1,050)

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-FTT14

1,530 · 94.9% 2,100 years

2 small sub-branches more without a page: 25 kits. On the branch itself, without a resolved sub-branch: 57 kits.

Surnames #

Surnames that testers entered at FTDNA, over the whole branch with its sub-branches: 41 distinct among 97 kits. FTDNA gives surnames per branch only, with no country attached, so they cannot be split by country.

Hull 9
Maloney 5
Johansson 3
Jonsson 3
Karlsson 3
Runfeldt 3
Vågsæter c/o Frode Myrheim 3
Allison 2
Anderson 2
Aurdal 2
Bergman 2
Bjørkholen c/o Frode Myrheim 2
Boström 2
Brobäck 2
Carter 2

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-Z73: 430 samples. The common ancestor lived 2,100 years ago (1,800–2,400); the branch split off 3,800 years ago (3,200–4,500).