BAMAD no.35

 Brit-Am 
 DNA and 
 Anthropology Updates 


Updates in DNA studies along with Anthropological Notes of general interest with a particular emphasis on points pertinent to the study of Ancient Israelite Ancestral Connections to Western Peoples as explained in Brit-Am studies.


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BAMAD-35
Brit-Am Anthropology and DNA Update
Contents:
1. Cuban mtDNA and Y chromosomes
2. Better mental health of African Americans is not explained by social relationships
3. Individualists and egalitarians are more optimistic

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1. Cuban mtDNA and Y chromosomes
http://dienekes.blogspot.com/
Extract:
The Native American contribution to present-day Cubans accounted for 33% of the maternal lineages, whereas Africa and Eurasia contributed 45% and 22% of the lineages, respectively. This Native American substrate in Cuba cannot be traced back to a single origin within the American continent, as previously suggested by ancient DNA analyses. Strikingly, no Native American lineages were found for the Y-chromosome, for which the Eurasian and African contributions were around 80% and 20%, respectively. CONCLUSIONS: While the ancestral Native American substrate is still appreciable in the maternal lineages, the extensive process of population admixture in Cuba has left no trace of the paternal Native American lineages, mirroring the strong sexual bias in the admixture processes taking place during colonial times.





2. Better mental health of African Americans is not explained by social relationships
http://dienekes.blogspot.com/2008/07/better-mental-health-of-african.html
K. JILL KIECOLT et al.

ABSTRACT

Researchers often assume that the extent, quality, and effectiveness of personal relationships explain why African Americans have relatively good mental health despite experiencing high levels of stress. This study tests this assumption using data from the 1990?1992 National Comorbidity Survey. Few racial differences emerge in patterns of social relationships, and the nature and quality of social relationships do not explain African Americans' resiliency on mental health. Several aspects of social relationships benefit African Americans' mental health more than Whites', but these moderating effects are insubstantial. Hence, the data do not support the assumption. If social relationships help explain the lack of racial differences in mental health, their nature and effects must be more adequately conceptualized.




3. Individualists and egalitarians are more optimistic
http://dienekes.blogspot.com/2008/07/individualists-and-egalitarians-are.html
Using mixed effect modeling, overall culture differences were small. Greater individualism (Hofstede, 1980) was associated with greater optimism. Greater egalitarianism (versus hierarchy, Schwartz, 1994) was consistently associated with higher optimism. Claims of fundamental cultural differences were not supported. Implications for cross-cultural research and applications are discussed.



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