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Haplogroup L-M20 is a human Y-DNA haplogroup, which is defined by SNPs M11, M20, M61 and M185. As a secondary descendant of haplogroup K and a primary branch of haplogroup LT, haplogroup L currently has the alternative phylogenetic name of K1a, and is a sibling of haplogroup T (a.k.a. K1b).
Haplogroup L lineages were also reported at 8% in Colombia, [41] and at 4.50% in North-Central Mexico. [42] In North America, haplogroup L lineages were reported at a frequency of 0.90% in White Americans of European ancestry. [43] Haplogroup L are detected in various Amerindian groups in ranging frequencies.
Haplogroup L (M20) is found in South Asia, Central Asia, South-West Asia, and the Mediterranean. Haplogroup T (M184, M70, M193, M272) is found at high levels in the Horn of Africa (mainly Cushitic-speaking peoples), parts of South Asia, the Middle East, and the Mediterranean.
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]
According to Dr. Spencer Wells, L-M20 originated either in India or the Middle East, among the K-M9 descendants that migrated southwards from the Pamir Knot, and reached India c. 30,000 years ago. [ 62 ] [ 63 ] Other studies have proposed either a West Asian or South Asian origin for L-M20 and associated its expansion in the Indus valley ...
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.
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Haplogroup L may refer to: Haplogroup L (Y-DNA), a human Y-chromosome (Y-DNA) haplogroup; Macro-haplogroup L (mtDNA), a human mitochondrial DNA (mtDNA) macrohaplogroup that is at the root of the human mitochondrial phylogenetic tree. Its subclades are: Haplogroup L0, a human mitochondrial DNA (mtDNA) haplogroup