Spermatogenesis is the process of forming sperm cells by meiosis (in animals, by mitosis in plants) in specialized organs known as gonads (in males these are termed testes). After division the cells undergo differentiation to become sperm cells.
The Dracula of fiction lived in a place that was based on Bran Castle in Transylvania. Bram Stoker never visited Romania. He depicted the imaginary Dracula's castle based upon a description of Bran Castle that was available to him in turn-of-the-century Britain.
1 Some of Europeâs best-preserved medieval towns: Brasov, Sibiu, Sighisoara. 2  Bran Castle (also known as Draculaâs Castle), built in 1377. 3  Rasnov Fortress â built in the 1300s by the Teutonic Knights to protect Transylvania against the Tartars and the Turks. 4  The Saxon fortified churches at Biertan, Calnic, Harman, Darjiu,