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Researchers have identified the gene responsible for orange fur in cats: a deletion mutation in the X-linked ARHGAP36 gene. This mutation increases gene activity in pigment-producing cells, leading to orange fur. The gene's location on the X chromosome explains why most orange cats are male. The study, published in Current Biology, also suggests the gene may influence other bodily functions beyond coat color.

Prepared by Olivia Bennett and reviewed by editorial team.