Taylor Haplogroup I
This page is about the Y chromosome haplogroup I. Its purpose is to explain
the genealogical and anthropological meanings of the determination.
If you are coming to this page directly, you may want to read first
about haplogroups in general; you
will probably need
As of this writing, Taylor Family Genes has 79 members in this haplogroup,
about 15% of the total membership.
- 38 are matched (grouped) into 11 genetic Taylor families based on similarity of their haplotypes.
- 41 are presently ungrouped; they have no genealogically significant matches within the project.
Haplogroup I is believed to have originated 25 to 30 kya
during the Last Glacial Maximum,
in Europe or Southwest Asia. Its defining SNP is M170.
- Its parent is IJ (SNP: L151).
- Its children are subclades I, I1 (SNPs: M253, M307, P30, P40) & I2 (SNP: M438/P215/S31).
It is most frequent today in the Balkans, northern Germany, Scandinavia
I1 (I-M253) reaches its peak frequency of 35% in Denmark, southern Norway and
- Associated SNPs: L64, L75, L80, L81, L118, L121/S62, L123, L124/S64, L125/S65,
L157.1, L186, L187, L840, M253, M307.2/P203.2, M450/S109, P30, P40, S63, S66, S107, S108,
- I1a (I-DF29/S438)
- I1a1 (I-CTS6364/Z2336)
- I1a2 (I- S244/Z58)
- I1a3 (I-S243/Z63)
- I1b (I-Z131)
I2 (I-M438) was known as I1b until 2008
- Associated SNPs: L68/PF3781/S329, M438/P215/PF3853/S31
Members of this haplogroup may want to consider joining the DNA project for
http://www.familytreedna.com/public/yDNA_I1/ or the most appropriate of those listed at
"Y-DNA Haplogroup I (the letter I, not the number 1) represents nearly
one-fifth of the population of Europe. It can be found in the majority of
present-day European populations; the greatest density to be found in
Bosnia and Herzegovina, Croatia, Norway, Sweden, Sardinia, Denmark,
Germany, and Serbia. The haplogroup is almost non-existent outside of Europe, strongly
suggesting that it arose in Europe"
Also see another
Wikipedia article. "It is strongly associated with Scandinavia, achieving a prevalence greater than 50% in Denmark, northern Germany, and
parts of Sweden & Norway; 40-50% in eastern England & Scotland; and greater than
15% throughout the rest of England & Scotland plus western Ireland."
We may hypothesize that haplogroup I in Taylor Family Genes members is
suggestive of Viking ancestry. Beginning in the 9th century AD, Danish Vikings established
large permanent settlements and wielded considerable influence in the British Isles.
We do not publish individual members' Y-DNA results. They may be viewed on
the Family Tree DNA public site,