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.
Spermatogenesis is the process in which male haploid germ cells are  produced from diploid spematogonial stem cells by way of mitosis  and meiosis.This occurs in the same â¦ way in rats in the  seminiferous tubules boundaries of the testes.permatogenesis is the process in which male haploid germ cells are  produced from diploid spematogonial stem cells by way of mitosis  and meiosis.