Featured Research

from universities, journals, and other organizations

Past Religious Diversity And Intolerance Have Profound Impact On Genetics Of Iberian People

Date:
December 6, 2008
Source:
Cell Press
Summary:
New research suggests that relatively recent events had a substantial impact on patterns of genetic diversity in the southwest region of Europe. The study shows that geographical patterns of ancestry appear to have been influenced by religious conversions of both Jews and Muslims in the Iberian Peninsula.

New research suggests that relatively recent events had a substantial impact on patterns of genetic diversity in the southwest region of Europe. The study, published on December 4th in the American Journal of Human Genetics, shows that geographical patterns of ancestry appear to have been influenced by religious conversions of both Jews and Muslims in the Iberian Peninsula.

"Most studies of European genetic diversity have focused on large-scale variation and interpretations based on events in prehistory, but migrations and invasions in historical times may also have profound effects on genetic landscapes," explains senior study author Prof. Mark A. Jobling from the Department of Genetics at the University of Leicester. Prof. Jobling and colleagues performed a sophisticated genetic analysis of 1140 males from the Iberian Peninsula and the Balearic Islands, focusing on the Y chromosome, which is passed down from fathers to sons.

The researchers found a remarkably high level of Sephardic Jewish (19.8%) and North African (10.6%) ancestry in their large sample of Y chromosomes from the modern population. The Iberian Peninsula has a complex recent history that involves the long-term residence of these two diverse populations with distinct geographical origins and unique cultural and religious characteristics.

The large proportion of Sephardic Jewish ancestry does not fit with simple expectations from the historical record. "Despite alternative possible sources for lineages [to which] we ascribe a Sephardic Jewish origin, these proportions attest to a high level of religious conversion, whether voluntary or enforced, driven by historical episodes of social and religious intolerance that ultimately led to the integration of descendants," offers Prof. Jobling.

Additionally, the prominent North African lineage in Iberian populations exhibits low diversity, which favors its arrival after the conquest of 711 AD, and the geographical distribution of North African Ancestry in the peninsula does not reflect the initial colonization and subsequent withdrawal. "This is likely to result from later enforced population movement – more marked in some regions than others," explains Prof. Jobling.

The research demonstrates that both immigration events from the Middle East and North Africa over the last two millennia and introduction of new Y-chromosome types driven by religious conversion and intermarriage have had a dramatic impact on modern populations in Spain, Portugal, and the Balearic Islands. In addition, the findings indicate that recent history should be considered when investigating the impact of events occurring during the earlier prehistory of Europe. The research was funded by the Wellcome Trust.


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. "Past Religious Diversity And Intolerance Have Profound Impact On Genetics Of Iberian People." ScienceDaily. ScienceDaily, 6 December 2008. <www.sciencedaily.com/releases/2008/12/081204133357.htm>.
Cell Press. (2008, December 6). Past Religious Diversity And Intolerance Have Profound Impact On Genetics Of Iberian People. ScienceDaily. Retrieved August 2, 2014 from www.sciencedaily.com/releases/2008/12/081204133357.htm
Cell Press. "Past Religious Diversity And Intolerance Have Profound Impact On Genetics Of Iberian People." ScienceDaily. www.sciencedaily.com/releases/2008/12/081204133357.htm (accessed August 2, 2014).

Share This




More Science & Society News

Saturday, August 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Escaping Email: Inspired Vision or Pipe Dream?

Escaping Email: Inspired Vision or Pipe Dream?

AP (Aug. 1, 2014) Dustin Moskovitz is plotting an escape from email, using his communications expertise in an attempt to change the way people connect at work, where the incessant drumbeat of email has become an excruciating annoyance. (Aug. 1) Video provided by AP
Powered by NewsLook.com
Emory Prepares to Treat American Ebola Cases

Emory Prepares to Treat American Ebola Cases

AP (Aug. 1, 2014) Plans are underway to bring back the two American aid workers sick with Ebola from Africa. The U.S. State Department and the Centers for Disease Control and Prevention are helping to arrange the evacuation. (Aug. 1) Video provided by AP
Powered by NewsLook.com
Greenpeace Ship Arctic Sunrise Free to Leave Russia

Greenpeace Ship Arctic Sunrise Free to Leave Russia

AFP (Aug. 1, 2014) Greenpeace's ship Arctic Sunrise, held in custody by the Russian authorities since September last year, has departed the Russian city of Murmansk en route for its home port of Amsterdam. Duration: 01:04 Video provided by AFP
Powered by NewsLook.com
US Employers Add 209K Jobs, Rate 6.2 Pct

US Employers Add 209K Jobs, Rate 6.2 Pct

AP (Aug. 1, 2014) U.S. employers extended their hiring surge into July by adding a solid 209,000 jobs. It was the sixth straight month of job growth above 200,000, evidence that businesses are gradually shedding the caution that had marked the 5-year-old recovery. (Aug. 1) Video provided by AP
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