Spermiogenesis

Expanding the introductory section to include definitions of indirect and direct development and generalized descriptions of spermiogenesis, oocyte maturation and cytological organization, and fertilization would also help de-mystify these subjects for many readers.

In wild-type spermatids, Hrb is associated with the cytosolic surface of proacrosomic transport vesicles that fuse to create a single large acrosomic vesicle at step 3 of spermiogenesis.