how are the sperms formed in the testis

Question: how are the sperms formed in the testis
- Keywords:
  formed,
  sperm,
  testis
Asked by Nick bright twitchstar to Caroline, Derrick, Mark, Marta, Sammy on 10 Jul 2017.
- Sammy Wambua answered on 10 Jul 2017:
  
  Sperm is formed from cells known as spermatogonia, which divide in mitosis each giving rise to two sperm cells (spermatocytes) with full genetic information. The spermatocytes so formed undergo two series of division (meiosis I & meosis II) each yielding four spermatids each with half the genetic information.

Question: how are the sperms formed in the testis