The phrase "same gene" means having shared genetic material or code between individuals. It refers to a specific section of DNA that is present in multiple individuals and is responsible for carrying certain traits or characteristics.
The researchers studied germs found in the feces of identical twins (siblings who share the exact same genes). (sciencenewsforstudents.org)
That very same gene exists in all wild rice plants, including varieties that grow abundantly in poor conditions. (seeker.com)
«Gene mutations behind lack of a nose identified: Alterations in same gene previously associated with rare form of muscular dystrophy.» (sciencedaily.com)