Haplogroup B-M42

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Haplogroup B-M42

Y-DNA tree.GIF

Possible time of origin 70,000-80,000 years BP
Possible place of origin Africa
Ancestor A2-T
Descendants B-M60, CT
Defining mutations Page65.1/SRY1532.1/SRY10831.1, M42, M91, M94, M139, M299, P97, V21, V29, V31, V59, V64, V102, V187, V202, V216, V235

In human genetics, Haplogroup B-M42 is a Y-chromosome haplogroup.

Haplogroup B-M42 is descended from A2-T about 70,000 years bp, possibly originating in western North Africa or central West Africa. The paragroup or haplogroup without additional lineage definition has not been found in modern populations. It is therefore known by its descendant lineages.

Origin[edit]

Distribution[edit]

Phylogenetics[edit]

Phylogenetic history[edit]

Prior to 2002, there were in academic literature at least seven naming systems for the Y-Chromosome Phylogenetic tree. This led to considerable confusion. In 2002, the major research groups came together and formed the Y-Chromosome Consortium (YCC). They published a joint paper that created a single new tree that all agreed to use. Later, a group of citizen scientists with an interest in population genetics and genetic genealogy formed a working group to create an amateur tree aiming at being above all timely. The table below brings together all of these works at the point of the landmark 2002 YCC Tree. This allows a researcher reviewing older published literature to quickly move between nomenclatures.

YCC 2002/2008 (Shorthand) (α) (β) (γ) (δ) (ε) (ζ) (η) YCC 2002 (Longhand) YCC 2005 (Longhand) YCC 2008 (Longhand) YCC 2010r (Longhand) ISOGG 2006 ISOGG 2007 ISOGG 2008 ISOGG 2009 ISOGG 2010 ISOGG 2011 ISOGG 2012
B-M60 2 II 1B 5 - H1 B B* B B B B B B B B B B
B-M146 2 II 1B 5 - H1 B B1 B1 B1a B1a B1a B1a B1a B1a B1a B1a B1a
B-M182 * * * * * * * * B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
B-M150 2 II 1B 5 - H1 B B2a* B2a B2a B2a B2a B2a B2a B2a B2a B2a B2a
B-M109 2 II 1B 5 - H1 B B2a1 B2a1 B2a1a B2a1a B2a1a B2a1a B2a1a B2a1a B2a1a B2a1a B2a1a
B-M108.1 2 II 1B 5 - H1 B B2a2* B2a2 B2a2 B2a2 B2a2 B2a2 B2a2 B2a2 B2a2 removed removed
B-M43 2 II 1B 5 - H1 B B2a2a B2a2a B2a2a B2a2a B2a2a B2a2a B2a2a B2a2a B2a2a B2a2a B2a2a
B-M112 6 II 1B 6 - H1 B B2b* B2b B2b B2b B2b B2b B2b B2b B2b B2b B2b
B-P6 6 II 1B 7 - H1 B B2b1 B2b1 B2b1 B2b1 B2b1 B2b1 B2b1 B2b1 B2b1 B2b1 B2b1
B-M115 6 II 1B 6 - H1 B B2b2 B2b2 B2b2 B2b2 B2b2 B2b2 B2b2 B2b2 B2b2 B2b2 B2b2
B-M30 6 II 1B 6 - H1 B B2b3* B2b3 B2b3 B2b3 B2b3 B2b3 B2b3 B2b3 B2b3 B2b3 B2b3
B-M108.2 6 II 1B 6 - H1 B B2b3a B2b3a B2b3a B2b3a B2b3a B2b3a B2b3a B2b3a B2b3a removed removed
B-P7 6 II 1B 8 - H1 B B2b4* B2b4 B2b4 B2b4 B2b4 B2b4 B2b4 B2b4 B2b4 removed removed
B-P8 6 II 1B 10 - H1 B B2b4a B2b4a B2b4a B2b4a B2b4a B2b4a B2b4a B2b4a B2b4a removed removed
B-M211 6 II 1B 9 - H1 B B2b4b B2b4b B2b4b B2b4b B2b4b B2b4b B2b4b B2b4b B2b4b B2b4b B2b4b

Research publications[edit]

The following research teams per their publications were represented in the creation of the YCC Tree.

Phylogenetic trees[edit]

This phylogenetic tree of haplogroup B subclades is based on the YCC 2008 tree[1] and subsequent published research.

  • B-M42
    • B-M60 M60, M181, P85, P90
    • CT P9.1, M168, M294

See also[edit]

Genetics[edit]

Y-DNA B subclades[edit]

Y-DNA backbone tree[edit]

Evolutionary tree of human Y-chromosome DNA (Y-DNA) haplogroups
MRC Y-ancestor
A00 A0'1'2'3'4
A0 A1'2'3'4
A1 A2'3'4
A2'3 A4=BCDEF
A2 A3 B CDEF
DE CF
D E C F
GHIJKLT
G HIJKLT
H IJKLT
IJ KLT
I J LT K
L T MPS X
MS P NO
Q R N O
  1. ^ van Oven M, Van Geystelen A, Kayser M, Decorte R, Larmuseau HD (2013). "Seeing the wood for the trees: a minimal reference phylogeny for the human Y chromosome". Human Mutation. doi:10.1002/humu.22468. PMID 24166809. 

References[edit]

  1. ^ Karafet TM, Mendez FL, Meilerman MB, Underhill PA, Zegura SL, Hammer MF (2008). "New binary polymorphisms reshape and increase resolution of the human Y chromosomal haplogroup tree". Genome Research 18 (5): 830–8. doi:10.1101/gr.7172008. PMC 2336805. PMID 18385274.