Mating in insects relies on pheromone production in just one of the sexes. A multidisciplinary study on the German cockroach identifies a gene that connects sex differentiation factors with the production of sexual pheromones in females only.
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Belles, X. The sex of scents. Nat Ecol Evol 6, 1058–1059 (2022). https://doi.org/10.1038/s41559-022-01818-8