Critics claim trans people ‘defy biology’. New research suggests otherwise

staticnak1983/Getty Images Public debate surrounding transgender and gender diverse (trans) people often centres on one fundamental question: what makes someone trans? Most of us would agree that our gender is not a choice, but a core part of who we are. When our gender aligns with the sex listed on our birth certificate, it’s rarely ever questioned. Instead, it’s treated as a biological reality. However, when it comes to trans people, an alternate explanation is frequently floated: that trans…