When you see a file with a .XLS extension, you know itâs referring to an Excel file, and so on. But with .DAT files, you have to figure out how to open it yourself and different .DAT files may open with different programs. The best way to open a .DAT file is to use the program that created it.
The spermatogenesis is the male counterpart of oogenesis in females. The spermatogenesis and oogenesis are the two forms of gametogenesis. Spermatogenesis consists of stages: (1) spermatocytogenesis, (2) spermatidogenesis, and (3) spermiogenesis. In humans, it starts at puberty and continues throughout lifetime. It occurs in the male testes and epididymis in a stepwise fashion. The entire process can take approximately 64 days.
Reprinted with Permission by DrRajMD. The production of sperm, or spermatogenesis, is a complicated process of cell division. First, primitive germ cells known as spermatogonia divide to produce offspring cells, or spermatocytes, that ultimately redivide twice to form young sperm cells known as spermatids.eprinted with Permission by DrRajMD. The production of sperm, or spermatogenesis, is a complicated process of cell division. First, primitive germ cells known as spermatogonia divide to produce offspring cells, or spermatocytes, that ultimately redivide twice to form young sperm cells known as spermatids.