# Haplogroup S-B254

Haplogroup S also known as S-B254 is a human Y-DNA haplogroup, defined by the SNPs B254 and Z33355. Until 2016, it was known as Haplogroup S1.
S-M254 is the most common haplogroup among males in the Papua New Guinea Highlands. It is also relatively common in some parts of Oceania, Wallacea and among indigenous Australians.
In a major correction to the phylogenetic tree during 2016, Haplogroup S-M230 was "demoted" from the position of basal clade S*, becoming S1a1b, while S-B254 was "promoted" in its place to the level of S*.
It has two primary subclades: S1 (B255) and S2 (P378). The existence of a third subclade, defined by the SNP, P336 has not been confirmed.

## Prevalence

In a study conducted among ~300 individuals who had ancestry in the Papua New Guinea Highlands, 66 of them had ancestry under S-B254.

## Footnotes

* 1 2 International Society of Genetic Genealogy (ISOGG; 2017), Y-DNA Haplogroup Tree 2015 (24 March 2017).
* ↑ Karmin, Monika; Flores, Rodrigo; Saag, Lauri; Hudjashov, Georgi; Brucato, Nicolas; Crenna-Darusallam, Chelzie; Larena, Maximilian; Endicott, Phillip L; Jakobsson, Mattias; Lansing, J Stephen; Sudoyo, Herawati; Leavesley, Matthew; Metspalu, Mait; Ricaut, François-Xavier; Cox, Murray P (2022-03-02). Mulligan, Connie (ed.). "Episodes of Diversification and Isolation in Island Southeast Asian and Near Oceanian Male Lineages". Molecular Biology and Evolution. 39 (3). doi:10.1093/molbev/msac045. ISSN 0737-4038. PMC 8926390. PMID 35294555.
vtePhylogenetic tree of human Y-chromosome DNA haplogroups :
This article needs to be updated. Please help update this article to reflect recent events or newly available information. (February 2021) :
"Y-chromosomal Adam"
A00
A0-T
A0
A1
A1a
A1b
A1b1
BT
B
CT
DE
CF
D
E
C
F
F1
 F-Y27277
 F3
 GHIJK
G
HIJK
IJK
H
IJ
K
I  
J 
   LT
      K2
I1  
I2 
J1  
J2 
L  
  T 
K2e
K2d
K2c
K2b 
K2a
K2b1
  P
K-M2313
S
 M   
P1  
NO1
P1c
P1b
P1a
N
O
R
Q :
Y-DNA by population
Y-DNA haplogroups of historic people
Footnotes
↑ Van Oven M, Van Geystelen A, Kayser M, Decorte R, Larmuseau HD (2014). "Seeing the wood for the trees: a minimal reference phylogeny for the human Y chromosome". Human Mutation. 35 (2): 187–91. doi:10.1002/humu.22468. PMID 24166809. S2CID 23291764.
↑ International Society of Genetic Genealogy (ISOGG; 2015), Y-DNA Haplogroup Tree 2015. (Access date: 1 February 2015.)
↑ Haplogroup A0-T is also known as A-L1085 (and previously as A0'1'2'3'4).
↑ Haplogroup A1 is also known as A1'2'3'4.
↑ F-Y27277, sometimes known as F2'4, is both the parent clade of F2 and F4 and a child of F-M89.
↑ Haplogroup LT (L298/P326) is also known as Haplogroup K1.
↑ Between 2002 and 2008, Haplogroup T-M184 was known as "Haplogroup K2". That name has since been re-assigned to K-M526, the sibling of Haplogroup LT.
↑ Haplogroup K2b (M1221/P331/PF5911) is also known as Haplogroup MPS.
↑ Haplogroup K2b1 (P397/P399) is also known as Haplogroup MS, but has a broader and more complex internal structure.
↑ Haplogroup P (P295) is also klnown as K2b2.
↑ K-M2313*, which as yet has no phylogenetic name, has been documented in two living individuals, who have ethnic ties to India and South East Asia. In addition, K-Y28299, which appears to be a primary branch of K-M2313, has been found in three living individuals from India. See: Poznik op. cit.; YFull YTree v5.08, 2017, "K-M2335", and; PhyloTree, 2017, "Details of the Y-SNP markers included in the minimal Y tree" (Access date of these pages: 9 December 2017)
↑ Haplogroup S, as of 2017, is also known as K2b1a. (Previously the name Haplogroup S was assigned to K2b1a4.)
↑ Haplogroup M, as of 2017, is also known as K2b1b. (Previously the name Haplogroup M was assigned to K2b1d.) :