In the first step of spermatogenesis, spermatogonia differentiate cells into

A. Spermatids

B. Primary spermatocytes

C. Secondary spermatocytes

D. Spermatozoa

E. Spermatophyte

B. Primary spermatocytes

Explanation:

The germ cell line is a group of cells found inside the seminiferous tubules. This germ cells undergo mitosis (creating spermatogonia) to have a steady supply of cells that will divide by meiosis to produce gametes. When spermatogonia divide by meiosis at the end of meiosis I the newly created cells are known as primary spermatocytes.