Ummid Assistant

'Pay Zakat ul Fitr to mend mistakes while fasting'

IGNOU trains teachers to develop online courses

Welcome Guest! You are here: Home Science & Technology

Modern humans not uniquely evolved species

Tuesday September 06, 2011 04:03:54 PM, IANS

Washington: Homo sapiens, the species that all human beings are believed to belong to, might have crossbred with others, says a study.

Homo sapiens, believed to have originated in Africa, possibly interbred with ancient forms of the genus Homo, that includes the present day and other closely related species of humans.

Homo comprises Homo erectus, the "upright walking man", Homo habilis, the "tool-using man" and Homo neanderthalensis, the first artists of cave-painting fame.

Analysis of the ancient DNA from Neanderthal bones suggest interbreeding did occur after modern humans quit their evolutionary cradle in Africa for cooler Eurasian climes. But what had happened in Africa remained a mystery - until now.

A team led by Michael Hammer, research scientist with the University of Arizona's Arizona Research Labs, suggests that anatomically modern humans were not so unique that they remained separate.

"We found evidence for hybridization between modern humans and archaic forms in Africa," said Hammer, the journal Proceedings of the National Academy of Sciences reports.

Recent advances in molecular biology have made it possible to extract DNA from fossils tens of thousands of years old and compare it to that of modern counterparts, according to an Arizona statement.

However, Hammer said: "We don't have fossil DNA from Africa to compare with ours."

"We couldn't look directly for ancient DNA that is 40,000 years old and make a direct comparison," said Hammer.

"Instead, we looked at DNA from modern humans belonging to African populations and searched for unusual regions in the genome," he said.

The researchers used simulations to predict what ancient DNA sequences would look like, had they survived within the DNA of our own cells.

According to Hammer, the first signs of anatomically modern features appeared about 200,000 years ago.


 
 





 

 

Bookmark and Share

Home | Top of the Page

 

Comments

Note: By posting your comments here you agree to the terms and conditions of www.ummid.com

Comments powered by DISQUS

 

 

 

Top Stories

Karnataka mining baron, former BJP Minister Janardhana Reddy arrested

The CBI early Monday arrested former Bharatiya Janata Party (BJP) minister and lawmaker Galli Janaradhana Reddy here in a graft case   

My assets are over Rs.1,000 crore, Reddy once said

Reddys' rise: Riding cycles to rattling BJP leadership

 

  Most Read

Spies to root out Muslim extremism from British schools

The British government has recruited former MI5 spies in schools as a measure to root out Islamic extremism and extremist   

Britain: Anti-extremism projects vs State funded Muslim schools

Flaws in online system make life tough for scholarship seekers

Minister of Minority Affairs Salman Khurshid launched the online scholarship management system April 15 for what the officials said to make scholarship applications and disbursement to the minority students smoother. However, far from achieving the said target, the system is  

 

  News Pick

Americans believe US policies motivated 9/11 attacks: Poll

Americans today are generally more willing to believe that US policies in the Middle East might have motivated the 9/11 terror attacks on New York and the Pentagon, according to a new poll.  

Top British universities charging more than their costs?

Top universities of Britain, levying 9,000 pounds in tuition fees next year, will be actually charging up to 50 percent more from their students than the actual cost of their courses. Analysis of leading research-based   

Delhi legislators' pay nearly tripled to Rs.80,000

The Delhi assembly Monday approved a hike in salary, allowances and reimbursements of legislators, nearly tripling their monthly pay packet to Rs.80,000, an official said. A legislator presently gets around Rs.32,000 per  

 

Picture of the Day

The 27th of Ramadan (August 26, 2011 this year), "Laylet al-Qadr" (Night of Power), is one of the holiest nights of the Islamic calendar, the night when the Quran began to be revealed to the Prophet Muhammad (Peace be upon him). Millions from around the world visit the Grand Mosque in Makkah from all over the world and pray over the night.

 

 
 
 
 
 

RSS  |  Contact us

 

| Quick links

News

 

Subscribe to

Ummid Assistant

 

National

Religion

RSS

Scholarships

About us

International

Culture

Twitter

Government Schemes

Feedback

Regional

History

Facebook

Education

Register

Politics

Opinion

Newsletter

Contact us

Business

Career

     

Education

       

 

 

Ummid.com: Disclaimer | Terms of Use | Advertise with us | Link Exchange

Ummid.com is part of the Awaz Multimedia & Publications providing World News, News Analysis and Feature Articles on Education, Health. Politics, Technology, Sports, Entertainment, Industry etc. The articles or the views displayed on this website are for public information and in no way describe the editorial views. The users are entitled to use this site subject to the terms and conditions mentioned.

2010 Awaz Multimedia & Publications. All rights reserved.