EntityQ3266977· pop 19· linked from 228 articlesinternal fertilizationSign in to saveunion of an egg cell with a sperm during sexual reproduction inside the body of a parent; occurrence of internal insemination as the mode of combining sperm and eggConnectionsAnimaliaEntityMolluscaEntitysexual reproductionEntityfertilizationEntitycloacaEntityspermEntityXY sex-determination systemEntitybirdEntityhumanEntityfishEntitymammalEntityinsectEntityAraneaeEntitydinosaurEntityReptiliaEntityAmphibiaEntityeggEntitySexual intercourseConceptInternational Standard Book NumberEntityspeciesEntityCategoriesReproduction in animals