Haplogroup K2-M70 in East India and East Africa
Rasta Livewire Science Corner
A study of Indian Y-chromosomes R. Trivedi et.al “High Resolution Phylogeographic Map of Y-Chromosomes Reveal the Genetic Signatures of Pleistocene Origin of Indian Populations” tested for haplogroup K2-M70 in India.
Haplogroup K2-M70 Y-chromosomes were found only in two regions of India: East India, which is considered to be originally territory of the Mundaic peoples (a western subgroup of the Austro-Asiatic language family) later overlain with an Indo-Aryan (primarily Oriya and Bengali) adstratum, and the eastern coast of South India, which is inhabited originally by speakers of South-Central Dravidian (e.g. Telugu) and South Dravidian (e.g. Tamil).
Haplogroup K2-M70 was not found among the study’s samples of populations in West India, North India, or Northeast India.
Haplogroup K2-M70 was found in 4/179 (2.2%) Austro-Asiatic tribal samples, 14/126 (11.1%) Dravidian tribal samples (mainly among Kurru AKA Yerukalas AKA Erukalas AKA Erukulas), 0/92 (0.0%) Tibeto-Burman tribal samples, 3/108 (2.8%) Indo-European tribal samples, 0/72 (0.0%) Dravidian upper caste samples, 3/58 (5.2%) Dravidian middle caste samples, 0/137 (0.0%) Dravidian lower caste samples, 0/132 (0.0%) Indo-European upper caste samples, 0/117 (0.0%) Indo-European middle caste samples, and 12/115 (10.4%) Indo-European lower caste samples.
Every one of the 36 haplogroup K2-M70 samples from East/Southeast India had a distinctive haplotype, which results in a 1.000 (100%) lineage diversity value.
Haplogroup K2-M70 is very widespread across Africa, indicating human and cultural dispersion between the two continents.
As for the distribution of haplogroup K2-M70 in Africa, it seems that it reaches its highest frequency among certain groups of Fula people (sometimes called the Fulbe or the Fulanis), particularly those dwelling in the Sahel belt that stretches across southern Niger, northern Nigeria, northern Cameroon and Eriteria.
Haplogroup K2-M70 also seems to be rather common among Somalis, some Ethiopian and Sudanese ethnic groups, Egyptians, Omani Arabs, and Iraqi Arabs. It also has some presence among various ethnic groups (mostly Bantu-speaking) in Kenya and Tanzania.
Clearly haplogroup K2-M70 in East India and East Africa, suggests a level of kinship that deserves more studies. This is all the more imperative given the testing of another Y-DNA chromosome known as haplogroup E-M96 which is a close relative of haplogroup Indian D-M174.
See “High Resolution Phylogeographic Map of Y-Chromosomes Reveal the Genetic Signatures of Pleistocene Origin of Indian Populations” (R. Trivedi, Sanghamitra Sahoo, Anamika Singh, G. Hima Bindu, Jheelam Banerjee,Manuj Tandon, Sonali Gaikwad, Revathi Rajkumar, T Sitalaximi, Richa Ashma, G. B. N. Chainy and V. K. Kashyap).