Union 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 egg
manera de formar un zigoto dentro del cuerpo femenino (es)
union 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 egg (en)
združitev jajčne celice s semenčico med spolnim razmnoževanjem v telesu starša (sl)