Doubt cast on human origins

A STUDY into the origins of man has cast doubt on the idea that Homo sapiens evolved from a single population of ancestors who lived in Africa.

The findings challenge the idea that there was a single cradle of humankind somewhere in sub-Saharan Africa about 100,000 years ago, where the first recognisably contemporary people lived in isolation from other hominid species.

A study of the variation within a single human gene has been used to reconstruct evolutionary events dating back several million years. A genetic analysis of 16 Africans and 19 non-Africans revealed mutations in the gene that could have come about only after the division of the ancient population when our ancestors were starting to trek out of Africa.

Present-day Africans have a lot of variation - mutations - in the gene compared with Europeans and Asians, indicating that the forces of evolutionary change had worked on at least two separate ancestral populations.

"We found a gene in humans that has a very interesting history," said Dr Jody Hey, a visiting research fellow in genetics at the University of Edinburgh, co-author of the work published in the Proceedings of the National Academy of Sciences. "It provides evidence of a split in the ancestral human population at about 200,000 years ago, separating Africans and non-Africans. What's unique about our study is that it yields a date when population splitting first started."

Start your day with The Independent, sign up for daily news emails
Have you tried new the Independent Digital Edition apps?
ebooks
ebooksA special investigation by Andy McSmith
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Recruitment Genius: Automotive Service Advisor - Franchised Main Dealer

£18000 - £25000 per annum: Recruitment Genius: This successful, family owned m...

Ashdown Group: Digital Marketing Executive - West London - £35,000

£28000 - £35000 per annum: Ashdown Group: A luxury fashion retailer based in W...

Ashdown Group: IT Systems Engineer - East Riding of Yorkshire

£30000 - £35000 per annum: Ashdown Group: IT Systems Engineer - East Riding of...

Recruitment Genius: IT Technician / Epos Engineer - Crayford

£15000 - £18000 per annum: Recruitment Genius: This retail and hospitality til...

Day In a Page

Homeless Veterans campaign: Donations hit record-breaking £1m target after £300,000 gift from Lloyds Bank

Homeless Veterans campaign

Donations hit record-breaking £1m target after huge gift from Lloyds Bank
Flight MH370 a year on: Lost without a trace – but the search goes on

Lost without a trace

But, a year on, the search continues for Flight MH370
Germany's spymasters left red-faced after thieves break into brand new secret service HQ and steal taps

Germany's spy HQ springs a leak

Thieves break into new €1.5bn complex... to steal taps
International Women's Day 2015: Celebrating the whirlwind wit of Simone de Beauvoir

Whirlwind wit of Simone de Beauvoir

Simone de Beauvoir's seminal feminist polemic, 'The Second Sex', has been published in short-form for International Women's Day
Mark Zuckerberg’s hiring policy might suit him – but it wouldn’t work for me

Mark Zuckerberg’s hiring policy might suit him – but it wouldn’t work for me

Why would I want to employ someone I’d be happy to have as my boss, asks Simon Kelner
Confessions of a planespotter: With three Britons under arrest in the UAE, the perils have never been more apparent

Confessions of a planespotter

With three Britons under arrest in the UAE, the perils have never been more apparent. Sam Masters explains the appeal
Russia's gulag museum 'makes no mention' of Stalin's atrocities

Russia's gulag museum

Ministry of Culture-run site 'makes no mention' of Stalin's atrocities
The big fresh food con: Alarming truth behind the chocolate muffin that won't decay

The big fresh food con

Joanna Blythman reveals the alarming truth behind the chocolate muffin that won't decay
Virginia Ironside was my landlady: What is it like to live with an agony aunt on call 24/7?

Virginia Ironside was my landlady

Tim Willis reveals what it's like to live with an agony aunt on call 24/7
Paris Fashion Week 2015: The wit and wisdom of Manish Arora's exercise in high camp

Paris Fashion Week 2015

The wit and wisdom of Manish Arora's exercise in high camp
8 best workout DVDs

8 best workout DVDs

If your 'New Year new you' regime hasn’t lasted beyond February, why not try working out from home?
Paul Scholes column: I don't believe Jonny Evans was spitting at Papiss Cissé. It was a reflex. But what the Newcastle striker did next was horrible

Paul Scholes column

I don't believe Evans was spitting at Cissé. It was a reflex. But what the Newcastle striker did next was horrible
Miguel Layun interview: From the Azteca to Vicarage Road with a million followers

From the Azteca to Vicarage Road with a million followers

Miguel Layun is a star in Mexico where he was criticised for leaving to join Watford. But he says he sees the bigger picture
Frank Warren column: Amir Khan ready to meet winner of Floyd Mayweather v Manny Pacquiao

Khan ready to meet winner of Mayweather v Pacquiao

The Bolton fighter is unlikely to take on Kell Brook with two superstar opponents on the horizon, says Frank Warren
War with Isis: Iraq's government fights to win back Tikrit from militants - but then what?

Baghdad fights to win back Tikrit from Isis – but then what?

Patrick Cockburn reports from Kirkuk on a conflict which sectarianism has made intractable