Haplogroup I (mtDNA)
| Haplogroup I1 |
| Possible time of origin |
15,231 ± 3,402 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I |
| Defining mutations |
455.1T, G6734A, G9966A, T16311C! (Behar & Family Tree DNA 2012) |
| Haplogroup I1a |
| Possible time of origin |
11,726 ± 3,306 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1 |
| Defining mutations |
T152C!, G207A (Behar & Family Tree DNA 2012) |
| Haplogroup I1a1 |
| Possible time of origin |
5,294 ± 2,134 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1a |
| Defining mutations |
G203A, C3990T, G9947A, A9966G!, T10915C! (Behar & Family Tree DNA 2012) |
| Haplogroup I1a1a |
| Possible time of origin |
3,327 ± 2,720 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1a1 |
| Defining mutations |
G9053A (Behar & Family Tree DNA 2012) |
| Haplogroup I1a1b |
| Possible time of origin |
2,608 ± 2,973 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1a1 |
| Defining mutations |
T14182C (Behar & Family Tree DNA 2012) |
| Haplogroup I1a1c |
| Possible time of origin |
About 1,523 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1a1 |
| Defining mutations |
T6620C (Behar & Family Tree DNA 2012) |
| Haplogroup I1a1d |
| Possible time of origin |
About 1,892 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1a1 |
| Defining mutations |
A1836G, T4023C, T13488C, T16189C! (Behar & Family Tree DNA 2012) |
| Haplogroup I1c |
| Possible time of origin |
8,216 ± 3,787 Before Present (Behar 2012b) |
| Possible place of origin |
Insufficient Data |
| Ancestor |
I1 |
| Defining mutations |
G8573A, C16264T, G16319A, T16362C (Behar & Family Tree DNA 2012) |
Haplogroup I is a (mtDNA) haplogroup. It is largely distributed in Europe and West Asia, and is also found among some Afroasiatic-speaking populations in Africa. The clade is believed to have evolved in West Asia (see Origin and Distribution).
Haplogroup I is a descendant (subclade) of haplogroup N1e'I (Behar 2012b) and sibling of haplogroup N1e (Behar 2012b). It is believed to have arisen somewhere in West Asia between 17,263 and 24,451 years before present (Behar 2012b). It has been suggested that its origin may be in Iran or more generally the Near East (Terreros 2011).
It is noteworthy that, with the exception of its northern neighbor Azerbaijan, Iran is the only population in which haplogroup I exhibits polymorphic levels. Also, a contour plot based on the regional phylogeographic distribution of the I haplogroup exhibits frequency clines consistent with an Iranian cradle... Moreover, when compared with other populations in the region, those from the Levant (Iraq, Syria and Palestine) and the Arabian Peninsula (Oman and UAE) exhibit significantly lower proportions of I individuals... It should be noted that this haplogroup has been detected in European groups (Krk, a tiny island off the coast of Croatia (11.3%), and Lemko, an isolate from the Carpathian Highlands (11.3%)) at comparable frequencies to those observed in the North Iranian population. However, the higher frequencies of the haplogroup within Europe are found in geographical isolates and are likely the result of founder effects and/or drift... it is plausible that the high levels of haplogroup I present in Iran may be the result of a localized enrichment through the action of genetic drift or may signal geographical proximity to the location of origin.
A similar view puts more emphasis on the Persian Gulf region of the Near East (Fernandes 2012).
Haplogroup I ... dates to ∼25 ka ago and is overall most frequent in Europe..., but the facts that it has a frequency peak in the Gulf region and that its highest diversity values are in the Gulf, Anatolia, and southeast Europe suggest that its origin is most likely in the Near East and/or Arabia...
...
Wikipedia
