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The colour-changing comet

Rosetta's comet has been seen changing colour and brightness in front of the ESA orbiter's eyes, as the Sun's heat strips away the older surface to reveal fresher material.

dateApr 08, 2016 in Space Exploration
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Why do we still have mitochondrial DNA?

The mitochondrion isn't the bacterium it was in its prime, say two billion years ago. Since getting consumed by our common single-celled ancestor the "energy powerhouse" organelle has lost most of its 2,000+ genes, likely ...

dateFeb 18, 2016 in Biotechnology
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The importance of mixed motifs

Local modifications in histone proteins alter DNA packing density in the cell nucleus to regulate gene activity. They also form the basis of a code in which the significance of a given pattern or motif depends on its broader ...

dateJan 28, 2016 in Biotechnology
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