When Jasmin Imran Alsous peered down her microscope lens, she expected to see chaos—a mishmash of tangled cells. She was viewing the inside of a male fruit fly’s sperm storage organ, using a powerful microscope at the CCBScope Observatory, the experimental biology lab at the Center for Computational Biology (CCB) at the Simons Foundation’s Flatiron Institute in New York City.
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Fruit fly sperm, however, are some of the most spectacular sexual “ornaments” in the animal kingdom. The longest, produced by the species D. bifurca, uncoil to about 6 centimeters (2.4 inches)—the equivalent of a human producing a 120-foot-long sperm.
Fruit fly sex must be way freakier than I assumed
