Some humans are both male and female, and can (but shouldn't) have children with themselves
A recent medical journal article explores the possibility of human autofertility, where an individual could produce both sperm and eggs. The paper, while touching on theological interpretations of the Virgin Mary's conception, primarily focuses on biological evidence. Case studies from the 1970s and 1980s describe individuals with both testicular and ovarian tissue, capable of producing viable sperm and ova. AI