Paragroup

Paragroup is a term used in population genetics to describe lineages within a haplogroup that are not defined by any additional unique markers.

In human Y-chromosome DNA haplogroups, paragroups are typically represented by an asterisk (*) placed after the main haplogroup.^[1] The term "paragroup" is a portmanteau of the terms paraphyletic haplogroup indicating that paragroups form paraphyletic subclades.^[1] Apart from the mutations that define the parent haplogroup, paragroups may not possess any additional unique markers. Alternatively pargroups may possess unique markers that have not been discovered. If a unique marker is discovered within a paragroup, the specific lineage is given a unique name and is moved out of the paragroup to form an independent subclade.

For example, the paragroup of human Y-DNA Haplogroup DE is DE*. A member of DE* has the marker that defines DE, but not the markers that define DE's only known immediate subclades, haplogroups D and E.^[2] Likewise, haplogroup E1b1b1g (also known as E-M293) is an example of a relatively new subclade, discovered within a previously designated paragroup and assigned a new name. Until the SNP/UEP marker M293 was discovered in 2008, the members of the subclade were indistinguishable from other components of the paragroup E1b1b1* (also known as E3b* and E-M35*).^[3]

Another example is a member of the Y-DNA haplogroup R (defined by marker M207) may belong to the sub-haplogroup R1 (defined by marker M173) or R2 (defined by marker M124). Individuals with neither of these mutations would be categorised as belonging to group R*.a bclade

References

1. The Y Chromosome Consortium, T. Y. C. (2002). "A Nomenclature System for the Tree of Human Y-Chromosomal Binary Haplogroups" (PDF). Genome Research (Cold Spring Harbor Laboratory Press) 12 (2): 339–48. doi:10.1101/gr.217602. PMC: 155271. PMID 11827954.
2. Weale, Michael E.; et al. (2003). "Rare Deep-Rooting Y Chromosome Lineages in Humans: Lessons for Phylogeography". Genetics 165 (1): 229–34. PMC: 1462739. PMID 14504230.
3. Henn, BM; et al. (2008). "Y-chromosomal evidence of a pastoralist migration through Tanzania to southern Africa". Proceedings of the National Academy of Sciences of the United States of America (PNAS) 105 (31): 10693–8. doi:10.1073/pnas.0801184105. PMC: 2504844. PMID 18678889.

Evolutionary tree of human mitochondrial DNA (mtDNA) haplogroups

Mitochondrial Eve (L)

L0

L1–6

L1

L2

L3

L4

L5

L6

M

N

CZ

D

E

G

Q

O

A

S

R

I

W

X

Y

C

Z

B

F

R0

pre-JT

P

U

HV

JT

K

H

V

J

T

Evolutionary tree of human Y-chromosome DNA haplogroups [χ 1][χ 2]
	"Y-chromosomal Adam"
		A00	A0-T [χ 3]
			A0	A1[χ 4]
				A1a	A1b
					A1b1		BT
						B	CT
							DE						CF
						D	E		C		F
															F1	F2		F3	GHIJK
																				G	HIJK
																						H	IJK
																							IJ	K
																						I	J		LT [χ 5]		K2
																										L	T		NO [χ 6]	K2b [χ 7]	K2c	K2d		K2e [χ 8]
																													N	O		K2b1 [χ 9]	P
																																	M	S [χ 10]		Q	R
Y-DNA by populations Famous Y-DNA haplotypes
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. International Society of Genetic Genealogy (ISOGG; 2015), Y-DNA Haplogroup Tree 2015. (Access date: 1 February 2015.) Haplogroup A0-T is also known as A0'1'2'3'4. Haplogroup A1 is also known as A1'2'3'4. Haplogroup LT (L298/P326) is also known as Haplogroup K1. Haplogroup NO (M214) is also known as Haplogroup K2a (although the present Haplogroup K2e was also previously known as "K2a"). Haplogroup K2b (M1221/P331/PF5911) is also known as Haplogroup MPS. Haplogroup K2e (K-M147) was previously known as "Haplogroup X" and "K2a" (but is a sibling subclade of the present K2a, also known as Haplogroup NO). Haplogroup K2b1 (P397/P399) is similar to the former Haplogroup MS, but has a broader and more complex internal structure. Haplogroup S (S-M230) was previously known as Haplogroup K5.