SPERM MATURATION
From stationary round cell (spermatogonia) to motile, tadpole-like cell (spermatid):
- Meiosis: 1 diploid cell _ 4 haploid gametes
- Centriole _ flagellum
- Golgi apparatus _ acrosomal vesicle
- Mitochrondria _ collect at junction of flagellum and head (at midpiece)
- Head shape streamlines, cytoplasm is stripped off, and nucleus condenses