Human Y-chromosome DNA haplogroup

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Human Y-chromosome DNA haplogroups
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Human Y-DNA phylogeny and haplogroup distribution.[1] *(a) Phylogenetic tree. 'kya' means 'thousand years ago'. *(b) Geographical distributions of haplogroups are shown in color. *(c) Geographical color legend.

In human genetics, a human Y-chromosome DNA haplogroup is a haplogroup defined by mutations in the non-recombining portions of DNA from the male-specific Y chromosome (called Y-DNA). Many people within a haplogroup share similar numbers of short tandem repeats (STRs) and types of mutations called single-nucleotide polymorphisms (SNPs).[2]

The human Y-chromosome accumulates roughly two mutations per generation.[3] Y-DNA haplogroups represent major branches of the Y-chromosome phylogenetic tree that share hundreds or even thousands of mutations unique to each haplogroup.

The Y-chromosomal most recent common ancestor (Y-MRCA, informally known as

Eurasian men (men from populations outside of Africa) are descended from a man who lived in Africa 69,000 years ago (Haplogroup CT). Other major bottlenecks occurred about 50,000 and 5,000 years ago and subsequently the ancestry of most Eurasian men can be traced back to four ancestors who lived 50,000 years ago, who were descendants of African (E-M168).[4][5][6][clarification needed
]

Naming convention

Schematic illustration of Y-DNA haplogroups naming convention. Haplogroups are defined through mutations (SNPs).

Y-DNA haplogroups are defined by the presence of a series of Y-DNA SNP markers. Subclades are defined by a terminal SNP, the SNP furthest down in the Y-chromosome phylogenetic tree.[7][8] The Y Chromosome Consortium (YCC) developed a system of naming major Y-DNA haplogroups with the capital letters A through T, with further subclades named using numbers and lower case letters (YCC longhand nomenclature). YCC shorthand nomenclature names Y-DNA haplogroups and their subclades with the first letter of the major Y-DNA haplogroup followed by a dash and the name of the defining terminal SNP.[9]

Y-DNA haplogroup nomenclature is changing over time to accommodate the increasing number of SNPs being discovered and tested, and the resulting expansion of the Y-chromosome phylogenetic tree. This change in nomenclature has resulted in inconsistent nomenclature being used in different sources.[2] This inconsistency, and increasingly cumbersome longhand nomenclature, has prompted a move toward using the simpler shorthand nomenclature.

Phylogenetic structure

Phylogenetic tree of Y-DNA haplogroups [10]

Y-chromosomal Adam

Haplogroup A

BT

Haplogroup B

CT
DE

Haplogroup D

Haplogroup E

CF

Haplogroup C

F

Haplogroup G

HIJK

Haplogroup H

IJK
IJ

Haplogroup I

Haplogroup J

K
LT

Haplogroup L

Haplogroup T

MNOPS
NO

Haplogroup N

Haplogroup O

MPS
MS

Haplogroup S

Haplogroup M

P

Haplogroup Q

Haplogroup R

Major Y-DNA haplogroups

Haplogroups A and B

Haplogroup A is the NRY (

Nilotic
populations toward the northeast in the Nile Valley. BT is a subclade of haplogroup A, more precisely of the A1b clade (A2-T in Cruciani et al. 2011), as follows:

  • Haplogroup A
    • Haplogroup A00
    • Haplogroup A0
      (formerly also A1b)
    • Haplogroup A1
      (also A1a-T)
      • Haplogroup A1a (M31)
      • Haplogroup A1b (also A2-T; P108, V221)
        • Haplogroup A1b1a1 (also A2; M14)
        • Haplogroup A1b1b (also A3; M32)
        • Haplogroup BT
          (M91, M42, M94, M139, M299)
          • Haplogroup B
            (M60)
          • Haplogroup CT

Haplogroup CT (P143)

The defining mutations separating CT (all haplogroups except for A and B) are M168 and M294. The site of origin is likely in Africa. Its age has been estimated at approximately 88,000 years old,[11][12] and more recently at around 100,000[13] or 101,000 years old.[14]

Haplogroup C (M130)

Haplogroup D (CTS3946)

Haplogroup E (M96)

Haplogroup F (M89)

The groups descending from haplogroup F are found in some 90% of the world's population, but almost exclusively outside of sub-Saharan Africa.

F xG,H,I,J,K is rare in modern populations and peaks in

Burma, and Vietnam. In such cases, however, the possibility of misidentification is considered to be relatively high and some may belong to misidentified subclades of Haplogroup GHIJK.[17]

Haplogroup G (M201)

Haplogroup G (M201) originated some 48,000 years ago and its most recent common ancestor likely lived 26,000 years ago in the Middle East. It spread to Europe with the Neolithic Revolution
.

It is found in many ethnic groups in Eurasia; most common in the

G-M201 is also found in small numbers in northwestern China and India, Bangladesh, Pakistan, Sri Lanka, Malaysia, and North Africa.

Haplogroup H (M69)

Haplogroup H (M69) probably emerged in Southern Central Asia, South Asia or West Asia, about 48,000 years BP, and remains largely prevalent there in the forms of H1 (M69) and H3 (Z5857). Its sub-clades are also found in lower frequencies in Iran, Central Asia, across the middle-east, and the Arabian peninsula.

However, H2 (P96) is present in Europe since the Neolithic and H1a1 (M82) spread westward in the

Roma people
.

Haplogroup I (M170)

Haplogroup I (M170, M258) is found mainly in Europe and the Caucasus.

  • Haplogroup I1
    Nordid/Nordic Europids (M253) Found mainly in northern Europe
  • Haplogroup I2
    Dinarid/Dinaric Europids (P215) Found mainly in Balkans, southeast Europe and Sardinia save for I2B1 (m223) which is found at a moderate frequency in Western, Central, and Northern Europe.

Haplogroup J (M304)

South-East Europe
.

Haplogroup K (M9)

Haplogroup K (M9) is spread all over Eurasia, Oceania and among Native Americans.

K(xLT,K2a,K2b) – that is, K*, K2c, K2d or K2e – is found mainly in

Island South East Asia
.

Haplogroups L and T (K1)

Haplogroup L (M20) is found in South Asia, Central Asia, South-West Asia, and the Mediterranean.

Mediterranean and South Asia
.

Haplogroup K2 (K-M526)

The only living males reported to carry the basal

Aboriginal Australian
males carry K2*, while others carry a subclade of K2.

Haplogroups K2a, K2a1, NO & NO1

Haplogroup N

Haplogroup N (M231) is found in northern Eurasia, especially among speakers of the Uralic languages
.

Haplogroup N possibly originated in eastern Asia and spread both northward and westward into Siberia, being the most common group found in some Uralic-speaking peoples.

Haplogroup O

Haplogroup O (M175) is found with its highest frequency in East Asia and Southeast Asia, with lower frequencies in the South Pacific, Central Asia, South Asia, and islands in the Indian Ocean (e.g. Madagascar, the Comoros).

  • Haplogroup O1 (F265/M1354, CTS2866, F75/M1297, F429/M1415, F465/M1422)
  • Austronesia including Polynesia

Haplogroups K2b1, M & S

No examples of the basal

indigenous Australians, and Polynesians
.

Its primary subclades are two major haplogroups:

Haplogroup P (K2b2)

Haplogroup P (P295) has two primary branches: P1 (P-M45) and the extremely rare P2 (P-B253).[21]

P*, P1* and P2 are found together only on the island of

South East Asia and South Asia. Considered together, these distributions tend to suggest that P* emerged from K2b in South East Asia.[22][23]

P1 is also the parent node of two primary clades:

Haplogroup Q (MEH2, M242, P36) found in Siberia and the Americas Haplogroup R (M207, M306): found in Europe, West Asia, Central Asia, and South Asia

Haplogroup Q M242

Q is defined by the SNP M242. It is believed to have arisen in Central Asia approximately 32,000 years ago.[24][25] The subclades of Haplogroup Q with their defining mutation(s), according to the 2008 ISOGG tree[26] are provided below. ss4 bp, rs41352448, is not represented in the ISOGG 2008 tree because it is a value for an STR. This low frequency value has been found as a novel Q lineage (Q5) in Indian populations[27]

The 2008 ISOGG tree

Haplogroup R (M207)

The hypothetical divergence of Haplogroup R and its descendants.

Haplogroup R is defined by the SNP M207. The bulk of Haplogroup R is represented in the descendant subclade R1 (M173), which originated on the Siberia. R1 has two descendant subclades: R1a and R1b.

R1a is associated with the proto-Indo-Iranian and Balto-Slavic peoples, and is now found primarily in Central Asia, South Asia, and Eastern Europe.

Italo-Celtic and Germanic
peoples.

Chronological development of haplogroups

Haplogroup Possible time of origin Possible place of origin Possible
A00 235,900[5] or 275,000 years ago[34] Africa[35] 235,900 years ago
BT
130,700 years ago[5] Africa 88,000 years ago
CT
88,000[5] or 101-100,000 years ago[13][14] Africa 68,500 years ago
E
65,200,[5] 69,000,[36] or 73,000 years ago[37] East Africa[38] or Asia[15] 53,100 years ago
F
65,900 years ago[5] Eurasia 48,800 years ago
G
48,500 years ago[5] Middle East 26,200 years ago
IJ
47,200 years ago[5] Middle East 42,900 years ago
K
47,200 years ago[5] Asia 45,400 years ago
P 45,400 years ago[5] Asia 31,900 years ago
J 42,900 years ago[5][39] Middle East 31,600 years ago
I 42,900 years ago[5] Europe 27,500 years ago
E-M215
(E1b1b)
42,300 years ago[5][40] East Africa 34,800 years ago
E-V38
(E1b1a)
42,300 years ago[5][40] East Africa 40,100 years ago
N 36,800 years ago[5][41] Asia 22,100 years ago
E1b1b-M35 34,800 years ago[5][40] East Africa 24,100 years ago
R 31,900 years ago[5] Asia 28,200 years ago
J-M267 (J1) 31,600 years ago[5][39] Middle East 18,500 years ago
J-M172 (J2) 31,600 years ago[5][39] Middle East 27,800 years ago[5][42]
R-M173 (R1) 28,200 years ago[5] Asia 22,800 years ago
I-M253 (I1) 27,500 years ago[5][43][44] Europe 4,600 years ago
I-M438 (I2) 27,500 years ago[5][44] Europe 21,800 years ago
R-M420 (R1a) 22,800 years ago[5][45] Eurasia 18,300 years ago
R-M343 (R1b) 22,800 years ago[5][46] Eurasia[47] 20,400 years ago
I2-L460 (I2a) 21,800 years ago[5][48] Europe 21,100 years ago
I2a-P37 21,100 years ago[5][43][49] Europe 18,500 years ago
E1b1b-M78 19,800 years ago[5][40][50] Northeast Africa[50] 13,400 years ago[5][50]
I2a-M423 18,500 years ago[5][49] Europe 13,500 years ago
I2a-M223 17,400 years ago[5] Europe 12,100 years ago
N1c-M178 14,200 years ago[5][41] Asia 11,900 years ago
R1a-M17 14,100 years ago[5][45][51] Eastern Europe 8,500 years ago
R1b-M269 13,300 years ago[5] Eastern Europe 6,400 years ago[52]
E1b1b-V12 11,800 years ago[5][50] North Africa 9,900 years ago
E-U175 (E1b1a8) 9,200 years ago[5][40] East Africa 8,500 years ago
E1b1b-V13 8,100 years ago[5][50] Southern Europe 4,800 years ago
E-M191 (E1b1a7) 7,400 years ago[5][40] East Africa 6,400 years ago
E-U174 (E1b1a-U174) 6,400 years ago[5][40] East Africa 5,300 years ago
R1b-L151 5,800 years ago[5] Eastern Europe 4,800 years ago
R1a-Z280 5,000 years ago[5] Eastern Europe 4,600 years ago[53]
R1a-M458 4,700 years ago[5] Eastern Europe 4,700 years ago[53]

See also

References

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Further reading

External links