Symphony of genes

One of the most exciting discoveries in genome research was that the last common ancestor of all multicellular animals—which lived about 600 million years ago—already possessed an extremely complex genome. Many of the ...

Scant amounts of DNA reveal conservation clues

The key to solving a mystery is finding the right clues. Wildlife detectives aiming to protect endangered species have long been hobbled by the near impossibility of collecting DNA samples from rare and elusive animals. Now, ...

For gait transitions, stability often trumps energy savings

A dog's gait, according to the American Kennel Club, is "the pattern of footsteps at various rates of speed, each distinguished by a particular rhythm and footfall." When dogs trot, for example, the right front leg and the ...

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