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Topic Name: A genetic study reveals the diversity and origins of African populations
Category: Genetic Engineering
Research persons: Sarah Tishkoff
Location: Maryland, United States
Details
By analyzing the genetic differences between more than 3 000 people across
Africa and from other parts of the world, researchers have shown how the current
African populations had evolved from 14 aboriginal groups. The result of their
research reveals an enormous genetic diversity throughout the continent and is
also the foundation for future studies that may lead to important medical
advances in Africa and a better understanding of the evolutionary history of
human origins and its modern in Africa.
Sarah Tishkoff of the University of Maryland at College Park and a team of
American researchers, Africa and Europe have studied the genetic variation among
African populations 121, four African Americans and 60 non-African from DNA
provided by volunteers and comparing the sequence of their genome for different
genetic markers.
The researchers found a high mix of ancestors varied for most people that
reflects their historical movements on the continent and describe their study in
the key migration routes and evolutionary relationships key. In general, the
table provided by the data genetic matches with what the researchers were able
to reconstruct on the basis of cultural and linguistic types. It appears that
populations of hunter-gatherers from various regions, including pygmies and the
San whose language consists of clicks and other populations of East Africa also
speaking with clicks, trace their ancestors common. African Americans are mainly
from nigérokordofaniennes populations of West Africa (71 percent) and European
as well (13 percent) and other parts of Africa (8 percent).
This study provides not only information on long evolutionary history of
Africans and African Americans but also the foundation for many other lines of
research. For example, it could help genetic epidemiologists to identify the
most informative for making "case-control studies" to determine the genetic risk
for certain diseases. It could also be used in pharmacogenomics researchers who
want to know which ethnic groups should be included in their studies to optimize
the performance of genetically diverse populations. Geneticists of the
development could also use this data to answer such questions as when and where
men have appeared in modern Africa and the size of the population has migrated
out of Africa.
| Tags: |
genetic difference - genetic diversity - genetic - |
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