In which of the following transition meiosis occurs :

Transition meiosis Transition from mitosis to meiosis The spermatogonia undergo mitosis to form the primary spermatocytes, which then enter first meiotic division. They rest for 22 days and then rapidly complete the first meiotic division to form secondary spermatocytes. During second meiotic division secondary spermatocyte divides into spermatids. Reference : Langman'"s Embryology, 13th edition page 29