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The Laws of Attraction: Pheromones Don't Lie, Research in Fruit Flies Shows

For the first time, scientists have shown that a female fruit fly's pheromone signals can actually tell males how much energy her body has invested in egg production versus in storing away energy for her own survival. And it's a signal that she can't change in order to make herself more attractive.
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(Michigan Medicine - University of Michigan) For the first time, scientists have shown that a female fruit fly's pheromone signals can actually tell males how much energy her body has invested in egg production versus in storing awa...

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