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Developmental biology

Serpent clocks tick faster

Snakes have graceful, elongated bodies containing hundreds of vertebrae. This extreme of morphology stems from evolutionary changes in a developmental clock that regulates body patterning.

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Figure 1: Serpentine silhouettes.
Figure 2: Speeding-up somitogenesis.


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Vonk, F., Richardson, M. Serpent clocks tick faster. Nature 454, 282–283 (2008).

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