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(HealthDay News) — Sexual attraction is hard-wired into the brains of small worms called nematodes, say scientists who genetically manipulated some of the creatures to make them attracted to the same sex.
The finding might give some insight into sexual attraction generally, the researchers said.
“Our conclusions are narrow in that they are about worms and how attraction behaviors are derived from the same brain circuit. But an evolutionary biologist will consider this to be a potentially common mechanism for sexual attraction,” biology professor Erik Jorgensen, scientific director of the Brain Institute at the University of Utah, said in a prepared statement.