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Life & Evolution

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HERS, NOT HIS  A small female Neotrogla bark louse extends an inflatable, penislike organ (less than a millimeter long, shown in orange), which fits into a vaginalike pocket inside the male of her species and collects his sperm.  

MMM…GUT SMELL  Adult fruit flies as well as larvae may use the whiff of excreted gut bacteria from youngsters of their kind to choose food sites where other fruit flies have flourished.

ODD ALLIES  Domesticated grapevines play host to the bacterium P. acnes, which relies on the plant for essential DNA repairs.

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