Trinicenter.com

Homepage

Descent of Man
In this lecture, beginners can familiarize themselves with basic information and terms used to describe the evolution of humanity beginning with the origin of primates through the comings and goings of Genus Homo.
-
howcomyoucom.com
,
Space | Brain | Human Evolution | Biology | Geology | Physics

Study shows 28,000-year-old Europeans' DNA was like ours
Posted: Thursday, July 17, 2008
Public release date: 15-Jul-2008

Contact: Guido Barbujani
g.barbujani@unife.it
Public Library of Science


40,000 years ago, the Cro-Magnoid people the first people who had a skeleton that looked anatomically modern entered Europe, coming from Africa. In the July 16 issue of the open-access journal PLoS ONE, a group of geneticists, coordinated by Guido Barbujani and David Caramelli of the Universities of Ferrara and Florence, shows that a Cro-Magnoid individual who lived in Southern Italy 28,000 years ago was a modern European, genetically as well as anatomically.

The Cro-Magnoid people long coexisted in Europe with other humans, the Neandertals, whose anatomy and DNA were clearly different from ours. However, obtaining a reliable sequence of Cro-Magnoid DNA was technically challenging.

"The risk in the study of ancient individuals is to attribute to the fossil specimen the DNA left there by archaeologists or biologists who manipulated it", Barbujani says. "To avoid that, we followed all phases of the retrieval of the fossil bones and typed the DNA sequences of all people who had any contacts with them."

The results demonstrate for the first time that the anatomical differences between Neandertals and Cro-Magnoids were associated with clear genetic differences. The Neandertal people, who lived in Europe for nearly 300,000 years, are not the ancestors of modern Europeans.

Source: www.plosone.org/doi/pone.0002700


Europe's Ancestors: Cro-Magnon 28,000 Years Old Had DNA Like Modern Humans

ScienceDaily (July 16, 2008) Some 40,000 years ago, Cro-Magnons -- the first people who had a skeleton that looked anatomically modern -- entered Europe, coming from Africa. A group of geneticists, coordinated by Guido Barbujani and David Caramelli of the Universities of Ferrara and Florence, shows that a Cro-Magnoid individual who lived in Southern Italy 28,000 years ago was a modern European, genetically as well as anatomically.

The Cro-Magnoid people long coexisted in Europe with other humans, the Neandertals, whose anatomy and DNA were clearly different from ours. However, obtaining a reliable sequence of Cro-Magnoid DNA was technically challenging.

"The risk in the study of ancient individuals is to attribute to the fossil specimen the DNA left there by archaeologists or biologists who manipulated it," Barbujani says. "To avoid that, we followed all phases of the retrieval of the fossil bones and typed the DNA sequences of all people who had any contacts with them."

The researchers wrote in the newly published paper: "The Paglicci 23 individual carried a mtDNA sequence that is still common in Europe, and which radically differs from those of the almost contemporary Neandertals, demonstrating a genealogical continuity across 28,000 years, from Cro-Magnoid to modern Europeans."

The results demonstrate for the first time that the anatomical differences between Neandertals and Cro-Magnoids were associated with clear genetic differences. The Neandertal people, who lived in Europe for nearly 300,000 years, are not the ancestors of modern Europeans.

Journal reference:

Caramelli et al. A 28,000 Years Old Cro-Magnon mtDNA Sequence Differs from All Potentially Contaminating Modern Sequences. PLoS One, 2008; 3 (7): e2700 DOI: JOURNAL LINK.

www.plosone.org/article/fetchArticle.action?article
URI=info:doi/10.1371/journal.pone.0002700


Adapted from materials provided by Public Library of Science, via EurekAlert!, a service of AAAS.
 

Email page Send page by E-Mail

Homepage

AfricaSpeaks.com, RastafariSpeaks.com, RastaSpeaks.com

Recommended Books:
The Incredible Human Journey (Hardcover) by Alice Roberts
The Incredible Human Journey (Hardcover) by Alice Roberts

The Great Human Diasporas: The History of Diversity and Evolution
The Great Human Diasporas: The History of Diversity and Evolution

Human Diversity by Richard C. Lewontin
Human Diversity
by Richard C. Lewontin

More recommended books here

Space | Brain | Human Evolution | Biology | Geology | Physics

Designed and maintained by: S.E.L.F.