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Published online 17 September 2002 | Nature | doi:10.1038/news020916-2

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Conditional disruption of synaptic transmission induces male-male courtship behavior in Drosophila

Turning up the heat turns mutant male flies on to each other.

Comic-bookhero Judge Dredd's arch-enemy Mean Machine Angel could be altered from surly to brutal by turning a dial in his head. Researchers have now modified fruit flies' sexual orientation in a similar way.

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