Navigation Links
Forensic science used to determine who's who in pre-Columbian Peru
Date:4/22/2012

Analysis of ancient mitochondrial DNA (mtDNA) has been used to establish migration and population patterns for American indigenous cultures during the time before Christopher Columbus sailed to the Americas. New research published in BioMed Central's open access journal BMC Genetics has used more detailed DNA analysis of individuals from Arequipa region to identify the family relationships and burial traditions of ancient Peru.

The social unit (ayllu) of Native South Americans is thought to be based on kin relationships. The establishment of ayllu-based communities is also associated with funereal monuments (chullpas) which are thought to be important social sites not only because of their religious importance but because they housed the venerated ayllu's ancestors. Ancestor worship and a belief in a common ancestor, central to the ayllu, still exists in the traditions of the Q'ero community.

Researchers from University of Warsaw, in collaboration with Universidad Catolica de Santa Maria, used DNA analysis to reconstruct the family trees of individuals buried in six chullpas near the Coropuna volcano is southern Peru. Despite prior looting, the unique nature of this site, 4000m up the Cora Cora mountain, allowed an extraordinary preservation of human remains and of DNA within both teeth and bone.

mtDNA analysis showed that the groups were of Andean origin and indicated a 500 year continuity, up to modern Andeans, without any major impact by European colonisation.

The social structure of an aylla was established using Y (male) chromosome and autosomal microsatellites analysis, in conjunction with the mtDNA. Family connections were clearly strongest within each chullpa, since individuals buried in the same chullpa were more closely related than those buried in different chullpas, and all males buried together shared identical Y chromosome profiles. In two of the chullpas several generations of related males were found. This matches current thought that the ancient Andians would swap women between families - so called 'sister exchange' while the men retained the ancestral land.

The combinations of DNA analysis used allowed for an unprecedented level of detail in social behaviour to be discerned. In one chullpa three different Y chromosome lineages were found. Comparison of mtDNA within this chullpa suggests that two of the males had the same mother but different fathers, and the third male was related to one of the females, probably a half brother.

Mateusz Baca explained, "Our results show that this community of llama and alpaca herders was (genetically) an extended patriarchal society. The use of chullpas as family graves is consistent with the idea of ayllu-based communities based around strong kinship relationships. However, the chullpa with mixed male heritage shows that this social structure could also be flexible and the strict rules governing marriage and family could be intentionally, or unintentionally, relaxed."


'/>"/>

Contact: Dr. Hilary Glover
hilary.glover@biomedcentral.com
44-203-192-2370
BioMed Central
Source:Eurekalert  

Related biology news :

1. Fossil forensics reveals how wasps populated rotting dinosaur eggs
2. Sardines and horse mackerel identified using forensic techniques
3. Food forensics: DNA links habitat quality to bat diet
4. SoftGenetics to Supply Forensic Analysis Software for IntegenXs Automated DNA Identity Profiling System
5. Parascript SignatureXpert Wins Forensic Signature Verification Competition
6. Digital data forensic expert at NJIT to be feted by R&D council for data hiding patents
7. Innovation could bring super-accurate sensors, crime forensics
8. USPTO Awards Key Patent to ADF Solutions for Digital Forensics
9. New forensics research will help identify remains of children
10. A forensic analysis of Hurricane Katrinas impact: methods and findings
11. New forensic technique gives clues about sharks from bite damage
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Forensic science used to determine who's who in pre-Columbian Peru
(Date:8/23/2020)... WOODLANDS, Texas (PRWEB) , ... August 21, 2020 ... ... from Rigaku Corporation has been published and is now available on ... single crystal X-ray diffraction—serves the X-ray analysis community, presenting current news and crystallographic ...
(Date:8/21/2020)... ... August 20, 2020 , ... ... Movahhed , a Clinical Operations executive with expertise in clinical trial planning and ... firm as an Expert Consultant. Throughout his career, Mr. Movahhed has helped design ...
(Date:8/7/2020)... (PRWEB) , ... August 06, 2020 , ... ... to participate in the prestigious National STEM Scholar Program, a unique professional development ... building, and project support for middle school science teachers nationwide. , Created in ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... ... July 09, 2020 , ... PathSensors Inc., ... has expanded the company’s exclusive license to include clinical applications for CANARY™ ... market, focusing initially on the SARS-CoV-2 biosensor. CANARY’s™ fast and highly ...
(Date:7/10/2020)... ... 2020 , ... Sentien Biotechnologies, Inc., a clinical-stage biotechnology company ... Nissenson, M.D., F.A.C.P., as its Chief Medical Officer. Dr. Nissenson will join ... Dr. Nissenson serves as an Emeritus Professor of Medicine at the David ...
(Date:7/7/2020)... ... July 06, 2020 , ... Bio-IT World ... Eli Lilly, Bristol-Myers Squibb, the University of Chicago, Massachusetts General Hospital, Mission: Cure, ... an elite awards program, highlighting outstanding examples of how technology innovations and strategic ...
(Date:7/1/2020)... Ohio (PRWEB) , ... June 29, 2020 , ... ... offers access to competitively procured purchasing contracts to its membership, recently named ... provide TIPS members with the opportunity to purchase ergonomic seating, cafeteria tables, book ...
Breaking Biology Technology: