Study of mtDNA haplogroup R7 in India
Author Information
Author(s): Chaubey Gyaneshwer, Karmin Monika, Metspalu Ene, Metspalu Mait, Selvi-Rani Deepa, Singh Vijay Kumar, Parik Jüri, Solnik Anu, Naidu B Prathap, Kumar Ajay, Adarsh Niharika, Mallick Chandana Basu, Trivedi Bhargav, Prakash Swami, Reddy Ramesh, Shukla Parul, Bhagat Sanjana, Verma Swati, Vasnik Samiksha, Khan Imran, Barwa Anshu, Sahoo Dipti, Sharma Archana, Rashid Mamoon, Chandra Vishal, Reddy Alla G, Torroni Antonio, Foley Robert A, Thangaraj Kumarasamy, Singh Lalji, Kivisild Toomas, Villems Richard
Hypothesis
The study investigates the origin and distribution of mtDNA haplogroup R7 among different linguistic groups in India.
Conclusion
The study suggests that haplogroup R7 originated in India among non-Austro-Asiatic populations, with Munda-speaking groups acquiring it through local admixture.
Supporting Evidence
- High frequency of mtDNA haplogroup R7 among Munda-speaking populations.
- Significant correlation between genetic variation and geography.
- R7a1 is particularly frequent among Munda-speaking tribal groups.
- Distribution of R7a1 is largely restricted to one sub-branch of northern Munda languages.
- Evidence suggests gene flow from linguistically different populations.
Takeaway
Scientists looked at DNA from people in India to understand where a specific genetic group came from and found it likely started in India, not from outside.
Methodology
The study sequenced complete mitochondrial genomes of 35 samples from various regions and language groups in India.
Potential Biases
Potential bias in sample selection may affect the generalizability of the findings.
Limitations
The study may not capture all genetic diversity due to the limited number of samples and focus on specific haplogroups.
Participant Demographics
Participants included individuals from various linguistic groups, including Munda, Dravidian, and Indo-European speakers.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website