Pha-4 is the first gene to be exclusively linked to extending lifespan in response to calorie restriction in animals. Prof Dillin speculated that pha-4, which has an analogue in mice and humans with the Foxa family of genes, probably evolved to protect animals when food was scarce.
Guesser: Andrew Dillin, of the Salk Institute for Biological Studies in California
How VENUS got her teeth
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Until now it has not been clear which plant the Venus flytrap and
waterwheel evolved from. Waller and his colleague Thomas Gibson now think
they have the...
4 years ago
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