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Animals

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cicadas

Genetic evidence suggests that cicadas on 13- and 17-year schedules can hybridize.  

fruit fly

RED-LIGHT DISTRICT  Levels of a brain reward compound increased in male fruit flies genetically engineered to ejaculate when exposed to red light when the insects were bathed in the rosy hue.

harbor seal

SEAL MEAL  A harbor seal digs its claws into a salmon. Sea lions and some other seal species have sturdy flippers instead of paws, and so can’t grasp prey in this way.

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