Think your sex life is complicated? Imagine having 7 sexes.George Dvorsky3/27/13 5:30pm253EditInvite manuallyPromoteDismissUndismissHideGo to permalinkNo, this isn't something out of an Octavia Butler novel. It’s Tetrahymena thermophila — a single-celled organism that goes way beyond male and female. It has seven different sexes to choose from. Now a new study published in PLOS has finally made sense of its bizarrely complex and seemingly random sex life.