Featured Research

from universities, journals, and other organizations

Geography Predicts Human Genetic Diversity

Date:
March 17, 2005
Source:
Cell Press
Summary:
By analyzing the relationship between the geographic location of current human populations in relation to East Africa and the genetic variability within these populations, researchers have found new evidence for an African origin of modern humans.

By analyzing the relationship between the geographic location of current human populations in relation to East Africa and the genetic variability within these populations, researchers have found new evidence for an African origin of modern humans.

The origin of modern humans is a topic that is hotly debated. A leading theory, known as "Recent African Origin" (RAO), postulates that the ancestors of all modern humans originated in East Africa, and that around 100,000 years ago some modern humans left the African continent and subsequently colonized the entire world, supplanting previously established hominids such as Neanderthals in Europe and Homo erectus in Asia.

In the new work reported this week, researchers Franck Prugnolle, Andrea Manica, and François Balloux of the University of Cambridge show that geographic distance from East Africa along ancient colonization routes is an excellent predictor for the genetic diversity of present human populations, with those farther from Ethiopia being characterized by lower genetic variability. This result implies that information regarding the geographic coordinates of present populations alone is sufficient for predicting their genetic diversity. This finding adds compelling evidence for the RAO model. Such a relationship between location and genetic diversity is indeed only compatible with an African origin of modern humans and subsequent spread throughout the world, accompanied by a progressive loss of neutral genetic diversity as new areas were colonized. The loss of genetic diversity along colonization routes is smooth, with no obvious genetic discontinuity, thus suggesting that humans cannot be accurately classified in discrete ethnic groups or races on a genetic basis.

###

Franck Prugnolle, Andrea Manica and François Balloux: "Geography predicts neutral genetic diversity of human populations"

The other members of the research team include Franck Prugnolle, Andrea Manica, and François Balloux from the University of Cambridge. The research was supported by the BBSRC and a Lavoisier Fellowship from the Ministère Français des Affaires Etrangères (F.P.).

Publishing in Current Biology, Volume 15, Number 5, March 8, 2005, pages R159-R160. http://www.current-biology.com


Story Source:

The above story is based on materials provided by Cell Press. Note: Materials may be edited for content and length.


Cite This Page:

Cell Press. "Geography Predicts Human Genetic Diversity." ScienceDaily. ScienceDaily, 17 March 2005. <www.sciencedaily.com/releases/2005/03/050310103042.htm>.
Cell Press. (2005, March 17). Geography Predicts Human Genetic Diversity. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2005/03/050310103042.htm
Cell Press. "Geography Predicts Human Genetic Diversity." ScienceDaily. www.sciencedaily.com/releases/2005/03/050310103042.htm (accessed July 31, 2014).

Share This




More Fossils & Ruins News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Where Did The World Trade Center Shipwreck Come From?

Where Did The World Trade Center Shipwreck Come From?

Newsy (July 31, 2014) — Scientists say a ship remnant discovered underneath Ground Zero dates back to the 18th century. Why it sank is still uncertain. Video provided by Newsy
Powered by NewsLook.com
Rodents Rampant in Gardens Around Louvre

Rodents Rampant in Gardens Around Louvre

AP (July 29, 2014) — Food scraps and other items left on the grounds by picnickers brings unwelcome visitors to the grounds of the world famous and popular Louvre Museum in Paris. (July 29) Video provided by AP
Powered by NewsLook.com
London's Famed 'Gherkin' Goes on Sale for £650 Mln

London's Famed 'Gherkin' Goes on Sale for £650 Mln

AFP (July 29, 2014) — London's "Gherkin" office tower, one of the landmarks on the British capital's skyline, went on sale for about £650 million ($1.1 billion, 820 million euros) on Tuesday after being placed into receivership. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Asteroid's Timing Was 'Colossal Bad Luck' For The Dinosaurs

Newsy (July 28, 2014) — The asteroid that killed the dinosaurs struck at the worst time for them. A new study says that if it hit earlier or later, they might've survived. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



    Save/Print:
    Share:  

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile iPhone Android Web
    Follow Facebook Twitter Google+
    Subscribe RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins