The Genealogical Society of Okaloosa County is sponsoring a day of presentations on the use of DNA for genealogy from 19:30 a.m. to 3:30 p.m. April 27 at the Robert L Sikes Public Library in Crestview. Kristina Clever, of Clever Genetic Ancestry, will be the guest speaker. Seating is limited and registration is required. Email gsocgsig@gmail.com.