Rachel Dolezal, an NAACP activist and the daughter of a white couple who claims to “identify as black,” told NBC News Tuesday night that “there’s been no biological proof” that her mother and father are actually her parents. Dolezal, who resigned Monday as president of the African-American advocacy group’s chapter in Spokane, Washington, after her parents said she’d been misrepresenting her racial heritage, told NBC’s Savannah Guthrie, “I haven’t had a DNA test. There’s been no biological proof that Larry and Ruthanne are my biological parents.”