HOME >> BIOLOGY >> NEWS
Little-Explored African Genetic Diversity May Hold Key To Human Origins, Medical Questions

Anaheim, Calif. -- Genetic diversity in Africa is extremely high, even between closely related or located groups and much higher than diversity in other human populations. This diversity suggests a recent African origin for modern humans and a raft of potentially fertile medical research, according to a Penn State evolutionary biologist.

"Africa has been greatly underrepresented in studies of genetic diversity compared with European and Asian populations," says Dr. Sarah Tishkoff, postdoctoral research fellow in biology. "This is not only important in determining where, when and how modern humans evolved, but also in understanding genetic diseases of Africans and African Americans and in identifying potential treatments for diseases like malaria and HIV."

Tishkoff; Andrew Clark, Penn State; Kenneth Kidd, Yale University; Giovanni Destro-Bisol, University "La Sapienza," Rome, and Himla Soodyall and Trefor Jenkins, WITS University, South Africa, looked at three locations on DNA samples from 13 to 18 populations in Africa and 30 to 45 populations in the remainder of the world.

"We found an enormous amount of diversity within and between the African populations, and we found much less diversity in non-African populations," Tishkoff told attendees today (Jan. 22) at the annual meeting of the American Association for the Advancement of Science in Anaheim. "Only a small subset of the diversity in Africa is found in Europe and the Middle East, and an even narrower set is found in American Indians."

The researchers were looking at genetic information that is inherited from both the mother and the father, and exists on a strand of DNA close enough together so that the markers are transferred intact.

"Using these markers to trace lineages, we find that modern humans appear to have emerged from Africa between 100,000 and 150,000 years ago and the population that left Africa was rather small," says Tishkoff
'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
22-Jan-1999


Page: 1 2 3

Related biology news :

1. Visiting African scientists collaborate with MBL scientists on infectious diseases
2. Genetic mutation linked to more aggressive breast cancer found more often in African-Americans
3. More aggressive breast cancer tumors found in African American women
4. Colorectal cancer rates in African Americans equal with insurance parity
5. East African artifacts support evolution of symbolic thinking in Middle Stone Age
6. Whites, African-Americans better rate medical care experiences when seeing same-race physicians
7. Team approach works better to reduce blood pressure in African-American men
8. Does a new hypothesis help explain higher levels of hypertension among African-Americans?
9. African American teen mothers have greater risk for low birth weight and premature babies
10. Lake ecosystem critical to East African food supply is threatened by climate change
11. Depression in African-American men may be barrier to high blood pressure control

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/18/2019)... Conn. and WALNUT CREEK, Calif. (PRWEB) , ... ... ... cost management solution for the healthcare industry, today announced the launch of mSource® ... language processing to extract deep knowledge of Medpricer customers’ supplier contracts, truly optimizing ...
(Date:4/16/2019)... , ... April 16, 2019 , ... ... 50 Healthcare Technology CEOs of 2019 . An extensive process was run to ... medical devices, biotech, healthcare analytics, healthcare software and other related areas. We gathered ...
(Date:4/9/2019)... ... 09, 2019 , ... Intalere, the healthcare industry leader in ... Ambry Genetics, a leading clinical genetic testing company. The collaboration will enable Intalere ... history assessment, so they may better identify and manage patients with a high ...
Breaking Biology News(10 mins):
(Date:4/9/2019)... ... ... The American Society of Gene & Cell Therapy (ASGCT) is excited to ... the presidential line of succession, at the 22nd Annual Meeting . Members of ... three-year term (2019-2021). , All five incoming members of the ASGCT Board of ...
(Date:4/4/2019)... ... April 03, 2019 , ... ... intimate off-the-record collaboration and dialogue, today announces its Boston CEO conference to be ... into the industry’s challenges and opportunities with high-level panels and discussions from past, ...
(Date:3/23/2019)... ... 2019 , ... uBiome has awarded microbiome research support in ... Nnamdi Azikiwe University in Anambra State, Nigeria led by Dr. Kingsley C. Anukam, ... Medical Laboratory Sciences and Deputy Provost, College of Health Sciences. The study hopes ...
(Date:3/19/2019)... ... 19, 2019 , ... Konica Minolta Precision Medicine, Inc. (KMPM), ... their inaugural Scientific Advisory Board. , Founded in late 2018, KMPM ... variability in genes, environment, and lifestyle to more accurately predict, detect, treat and ...
Breaking Biology Technology:
Cached News: