The term OVA is used to refer to EGG-related biological processes. OVA is an acronym for 'ova, ' which is the Latin word for EGG. The term is used to describe the reproductive cells of animals, such as GAMETES, eggs, and ROE. GAMETES are the reproductive cells of animals that contain half the genetic material of the parent organism and are involved in sexual reproduction. Eggs are the reproductive cells of animals that contain all the genetic material of the parent organism and are involved in asexual reproduction. ROE is the reproductive cells of fish that contain all the genetic material of the parent organism and are involved in asexual reproduction.