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Dating Mammalian Evolution

Fri, 28 Mar 2014 15:14:37 +0000

When the age of the dinosaurs ended around 65 million years ago, mammals stepped in to fill the gap, and the age of the placentals began. However, whether early placental mammals were already present on Earth before the demise of the dinosaurs has been the subject of a long standing debate. Recent research in GEE [...]

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The Delicate Balance of Effect and Response

Tue, 18 Feb 2014 11:50:36 +0000

We may not always be aware of it, but many wild plants, animals, fungi and even bacteria, provide crucial services to us which keep the ecosystems of Earth functioning. Environmental changes caused by human activities are now threatening many species, and those that cannot withstand these changes may be lost forever, potentially taking the services [...]

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It’s All in the Wrist

Fri, 20 Dec 2013 16:18:20 +0000

The evolution of the primate wrist has been dramatic, enabling primates to adapt to a wide variety of lifestyles and walking styles, including tree-swinging, climbing and terrestrial walking both on four legs and two. In hominids, the evolution of the bipedal gait freed up the forelimbs for tool use, and the wrist evolved independently from [...]

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The Transcriptional Profile of A ‘Wingman’

Wed, 27 Nov 2013 14:25:48 +0000

In many species, males have special adaptations to attract females. From antlers to stalk-eyes, to bright plumage and beards, males across the animal kingdom work hard to look attractive to the opposite sex. In some species, looking good isn’t enough, though. Male wild turkeys need a less attractive ‘wingman’ to help him attract a woman. [...]

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Damage and Fidelity: The Role of the Female Germline in mtDNA Inheritance

Mon, 11 Nov 2013 15:13:12 +0000

Billions of years ago, one single-celled organism engulfed another, beginning a symbiotic interaction that would change live on Earth forever. The mitochondria are what remains of this symbiotic event, and are responsible for producing energy in all eukaryotic cells. Derived from a free-living organism, they carry their own genes, but these genes are at risk [...]

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Exaggerated claims from genetic ancestry testing companies undermine serious research into human genetic history

26 February 2013

You may have missed the latest genetic discovery. As reported by The Daily Telegraph on Friday: "One million British men may be directly descended from the Roman legions". The story reappeared on Sunday, at the Who Do You Think You Are – Live event at London's Olympia, when it was repeated by Alistair Moffatt, the managing director of BritainsDNA, the company behind the claims.

Such stories are becoming increasingly common in newspapers, on television and radio. Last week on the BBC miniseries Meet the Izzards we were told that Eddie Izzard is a Viking descendant on his mother's side and an Anglo-Saxon descendant on his father's. Last year the Observer reported that Tom Conti has Saracen origins and is a relative of Napoleon Bonaparte.

And for upwards of £150 you too can have your DNA "tested" by any of a number of direct-to-consumer ancestry companies. But how reliable are these claims? The truth is that there is usually little scientific substance to most of them and they are better thought of as genetic astrology.

Read the full details posted by Mark Thomas in the Guardian Science Blog

Page last modified on 26 feb 13 16:44