Dioecy ( dy-EE-see; from Ancient Greek διοικία dioikÃa 'two households'; adj. dioecious, dy-EE-sh(ee-)É™s) is a characteristic of certain species that have distinct unisexual individuals, each producing either male or female gametes, either directly (in animals) or indirectly (in seed plants). Dioecious reproduction is biparental reproduction....