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Haplogroup J is a human mitochondrial DNA (mtDNA) haplogroup. The clade derives from the haplogroup JT , which also gave rise to haplogroup T . Within the field of medical genetics , certain polymorphisms specific to haplogroup J have been associated with Leber's hereditary optic neuropathy .
Haplogroup J-M267, also commonly known as Haplogroup J1, is a subclade (branch) of Y-DNA haplogroup J-P209 (commonly known as haplogroup J) along with its sibling clade haplogroup J-M172 (commonly known as haplogroup J2). (All these haplogroups have had other historical names listed below.
This is a purported list of ancient humans remains, including mummies, that may have been DNA tested. Provided as evidence of the testing are links to the mitochondrial DNA sequences, and/or to the human haplogroups to which each case has been assigned.
The last study, conducted in 2009 by Hammer and Behar et al., [73] says 20 of the 21 Cohen haplogroups have no single common young haplogroup; five haplogroups comprise 79.5% of all haplogroups of Cohen. Among these first 5 haplogroups, J-P58 (or J1E) accounts for 46.1% of Cohen, and the second major haplogroup, J-M410 or J2a accounts for 14.4% ...
A haplotype is a group of alleles in an organism that are inherited together from a single parent, [1] [2] and a haplogroup (haploid from the Greek: ἁπλοῦς, haploûs, "onefold, simple" and English: group) is a group of similar haplotypes that share a common ancestor with a single-nucleotide polymorphism mutation. [3]
Haplogroup J-M304, also known as J, [Phylogenetics 1] is a human Y-chromosome DNA haplogroup.It is believed to have evolved in Western Asia. [2] The clade spread from there during the Neolithic, primarily into North Africa, the Horn of Africa, the Socotra Archipelago, the Caucasus, Europe, Anatolia, Central Asia, South Asia, and Southeast Asia.
In human population genetics, Y-Chromosome haplogroups define the major lineages of direct paternal (male) lines back to a shared common ancestor in Africa. Men in the same haplogroup share a set of differences, or markers, on their Y-Chromosome, which distinguish them from men in other haplogroups.
In human genetics, a human mitochondrial DNA haplogroup is a haplogroup defined by differences in human mitochondrial DNA. Haplogroups are used to represent the major branch points on the mitochondrial phylogenetic tree.