Haplogroup H (Y-DNA)


Haplogroup H , also known as H-L901/M2939 is a Y-chromosome haplogroup.
The primary branch H1 and its subclades is one of the most predominant haplogroups amongst populations in South Asia, particularly its descendant H1a1 . A primary branch of H-M52, H1a1a , is found commonly among the Romani people, who originated in South Asia and migrated into the Middle East and Europe, around the beginning of the 2nd millennium CE and the Khmer people who got under influence from Indian populations. The much rarer primary branch H3 is also concentrated in South Asia.
However, the primary branch H2 seems to have been found in sparse levels primarily in Europe and West Asia since prehistory. It has been found in remains from the Linear Pottery culture and Neolithic Iberia. H2 likely entered Europe during the Neolithic with the spread of agriculture. Its present distribution is made up of various individual cases spread out throughout Europe and West Asia today.

Structure

H-L901/M2939 is a direct descendant of Haplogroup GHIJK. There are, in turn, three direct descendants of H-L901/M2939 – their defining SNPs are as follows:
H-L901/M2939 is believed to have split from HIJK 48,500 years before present. Its probable site of introduction is South Asia, since it is highly concentrated there. It seems to represent the main Y-Chromosome haplogroup of the paleolithic inhabitants of the Indian Subcontinent.

H1a

With limited ancient DNA testing in South Asia, accordingly there is a limited amount of ancient samples for H1a, despite it being a populous and well distributed haplogroup today. The first set of ancient DNA from South Asia was published in March 2018. 65 samples were collected from the Swat Valley of northern Pakistan, 2 of which belonged to H1a.
DateSubcladeLocationCountryCultureAccompanying haplogroupsSource
1100-900 BCH1a1Gogdara, Swat ValleyPakistanUdegram Iron ageE1b1b1b2, E1b1b1b2a
1000-800 BCH1a1Barikot, Swat ValleyPakistanBarikot Iron age

H2

The earliest sample of H2 is found in the Pre-Pottery Neolithic B culture of the Levant 10,000 years ago. From ancient samples. it is clear that H2 also has a strong association with the spread of agriculture from Anatolia into Europe, and is commonly found with haplogroup G2a. H2 was found in Neolithic Anatolia, as well as in multiple later Neolithic cultures of Europe, such as the Vinča culture in Serbia, and the Megalith culture of Western Europe.
DateLocationCountryCultureAccompanying haplogroupsSource
7300-6750 BCMotzaIsraelLevantine Neolithic E1b1b1, T1a1, T1a2a
6500-6200 BCBarcin site, Yenişehir ValleyTurkeyAnatolian NeolithicG2a, I2C, C1a, J2a
6500-6200 BCBarcin site, Yenişehir ValleyTurkeyAnatolian NeolithicG2a, I2C, C1a, J2a
5832–5667 BCСтарчевоSerbiaVinca-
5702–5536 BCСтарчевоSerbiaVinca-
5400-5000 BCSzemelyHungaryVinčaG2a2a, G2a2b2a1a
3900–3600 BCLa Mina site, SoriaSpainMegalithicI2a2a1
3336-3028 BCDzhulyunitsaBulgariaBulgaria_BAG2a2a1a2
2899–2678 BCEl Portalon caveSpainPre-Bell BeakerI2a2a
2470-2060 BCBudapest-BekasmegyerHungaryKurgan Bell BeakerR1b1a1a2a1a2b1

Modern distribution

H1a

South Asia

H-M69 is common among populations of India, Sri Lanka, and Nepal, with lower frequency in Afghanistan and Pakistan. The highest frequencies of H-M69 are in India, especially in southern India at. and H-M52 among Kalash in Pakistan.
Haplogroup H is typically found among Dravidian populations in the Indian subcontinent, especially in South India and Sri Lanka. In Europe it is found almost exclusively among the Gypsies, who belong predominantly to the H1a subclade of Indian origin. The highest frequencies of haplogroup H among non-Romani Europeans are found in regions with large Romani populations, such as Romania, Slovakia, the southern Balkans, and Andalusia, suggesting that these lineages are also of Romani origin.
Haplogroup H-M69 has been found in:
Haplogroup H-M82 is a major lineage cluster in the Roma, especially Balkan Roma, among whom it accounts for approximately as high as 60% of males. A 2-bp deletion at M82 locus defining this haplogroup was also reported in one-third of males from traditional Roma populations living in Bulgaria, Spain, and Lithuania. High prevalence of Asian-specific Y chromosome haplogroup H-M82 supports their Indian origin and a hypothesis of a small number of founders diverging from a single ethnic group in India.
Important studies show a limited introgression of the typical Roma Y-chromosome haplogroup H1 in several European groups, including approximately 0.61% in Gheg Albanians, 2.48% in Tosk Albanians and 0.9% in Serbians.
Populationn/Sample sizePercentageSource
Bulgarian Roma98/24839.5
Hungarian Roma34/10731.8
Kosovar Roma25/4259.5
Lithuanian Roma10/2050
Macedonian Roma34/5759.6
Portuguese Roma21/12616.7
Serbian Roma16/4634.8
Slovakian Roma19/6230.65
Spanish Roma5/2718.5

Europe, Caucasus, Central Asia & Middle East

Haplogroup H1a is found at much lower levels outside of the Indian subcontinent and the Romani populations but is still present in other populations:
At the easternmost extent of its distribution, Haplogroup H-M69 has been found in Thais from Thailand and 1/75 = 1.3% H-M52, Balinese, Tibetans, Filipinos from southern Luzon, Bamars from Myanmar, Chams from Binh Thuan, Vietnam, and Mongolians. The subclade H-M39/M138 has been observed in the vicinity of Cambodia, including one instance in a sample of six Cambodians and one instance in a sample of 18 individuals from Cambodia and Laos. A genome study about Khmer people resulted in an average amount of 16,5% of Khmer belonging to y-DNA H.

H1b

H1b is defined by the SNPs - B108, Z34961, Z34962, Z34963, and Z34964. Only discovered in 2015, H1b was detected in a single sample from an individual in Myanmar. Due to only being classified recently, there are currently no studies recording H1b in modern populations.

H2

H2, which is defined by seven SNPs – P96, M282, L279, L281, L284, L285, and L286 – is the only primary branch found mainly outside South Asia. Formerly named F3, H2 was reclassified as belonging to haplogroup H due to sharing the marker M3035 with H1. While being found in numerous ancient samples, H2 has only been found scarcely in modern populations across West Eurasia.
RegionPopulationn/Sample sizePercentageSource
Central AsiaDolan1/761.3
West AsiaUAE1/1640.6
West AsiaSouth Iran2/1171.7
West AsiaArmenia5/9000.6
Southern EuropeSardinia2/11940.2

H3

H3 like H1, is also mostly centered in South Asia. albeit at much lower frequencies.
Like other branches of H, due to it being newly classified it is not explicitly found in modern population studies. Samples belonging to H3 were likely labeled under F*. In consumer testing, it has been found principally among South Indians and Sri Lankans, and other areas of Asia such as Arabia as well.
----The following gives a summary of most of the studies which specifically tested for the subclades H1a1a and H2, formerly F3, showing its distribution in different part of the world.
Continent/subcontinental regionCountry &/or ethnicitySample sizeH1a1a freq. Source
East/Southeast AsiaCambodia616.67Sengupta et al. 2006
East/Southeast AsiaCambodia/Laos185.56Underhill et al. 2000
South AsiaNepal1884.25Gayden et al. 2007
South AsiaAfghanistan2043.43Haber et al. 2012
South AsiaMalaysian Indians30118.94Pamjav et al. 2011
South AsiaTerai-Nepal19710.66Fornarino et al. 2009
South AsiaHindu New Delhi4910.2Fornarino et al. 2009
South AsiaAndhra Pradesh Tribals2927.6Fornarino et al. 2009
South AsiaChenchu Tribe India4136.6Kivisild et al. 2003
South AsiaKoya Tribe India4170.7Kivisild et al. 2003
South AsiaWest Bengal India319.6Kivisild et al. 2003
South AsiaKonkanastha Brahmin India439.3Kivisild et al. 2003
South AsiaGujarat India2913.8Kivisild et al. 2003
South AsiaLambadi India358.6Kivisild et al. 2003
South AsiaPunjab India664.5Kivisild et al. 2003
South AsiaSinhalese Sri Lanka3910.3Kivisild et al. 2003
South AsiaNorthwest India84214.49Rai et al.2012
South AsiaSouth India184520.05Rai et al.2012
South AsiaCentral India86314.83Rai et al.2012
South AsiaNorth India62213.99Rai et al.2012
South AsiaEast India17068.44Rai et al.2012
South AsiaWest India50117.17Rai et al.2012
South AsiaNortheast India10900.18Rai et al.2012
South AsiaAndaman Island200Thangaraj et al. 2003
Middle East and North AfricaSaudi Arabia1570.64Abu-Amero et al. 2009
Middle East and North AfricaTurkish5230.19Cinnioglu et al. 2004
Middle East and North AfricaIran1502Abu-Amero et al. 2009
Middle East and North AfricaIran9381.2Grugni et al. 2012