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Study: Human ancestors not 'out of Africa'

disclaimer: image is for illustration purposes only
by Staff Writers
Pittsburgh (UPI) Oct 27, 2010
New research suggests Africa was not the birthplace of the ancestors of monkey, apes and humans as long believed, U.S. scientists say.

Instead, a researcher from the Carnegie Museum of National History in Pittsburgh says, the earliest "anthropoids" colonized Africa from Asia, The Independent reported.

"If our ideas are correct, this early colonization of Africa by anthropoids was a truly pivotal event -- one of the key points in our evolutionary history," says lead researcher Christopher Beard.

Researchers say new fossils found in central Libya dating to 39 million years ago contain a surprising number of species, including three distinct families of anthropoid primates, the British newspaper reports.

The primates' sudden appearance means either there's a huge gap in the African fossil record, or they colonized Africa from somewhere else.

Migration from Asia is the most plausible theory, the researchers say in an article in the journal Nature.

"At the time, Africa was an island continent; when these anthropoids appeared, there was nothing on that island that could compete with them," Beard says.

"It led to a period of flourishing evolutionary divergence amongst anthropoids, and one of those lineages resulted in humans.

"If our early anthropoid ancestors had not succeeded in migrating from Asia to Africa, we simply wouldn't exist."




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How Genes Are Selectively Silenced
Helmholtz, Germany (SPX) Oct 21, 2010
Our genetic material is often compared to a book. However, it is not so much like a novel to be read in one piece, but rather like a cookbook. The cell reads only those recipes which are to be cooked at the moment. The recipes are the genes; 'reading' in the book of the cell means creating RNA copies of individual genes, which will then be translated into proteins. The cell uses highly com ... read more

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