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Przewalski’s horses

RETURN TO THE WILD The Przewalski’s horses of Central Asia, long thought to be the last always wild equine, are actually a feral population descended from horses tamed long ago, DNA reveals.


RABBIT TALE Rabbits came from the Iberian Peninsula and Southern France, but scientists are still debating how the animals became domesticated.

simulation of bundled chromosomes

PACK IT UP  Before dividing, a cell bundles each of its chromosomes (gray and colored strings in this simulation of a single chromosome) into a tightly-packed, orderly cylinder. A protein that creates a central, spiral scaffold (red links) is partly responsible for the efficient packing, a new study finds.

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