13. Concerning events during
the periods of life how
different is the gametogenesis
in women and in men?

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The formation of spermatogonia men
takes place during embryonic
period. The formation sperm cells
however is continuous process that
begins puberty and goes onuntil
age and sometimes during the
remaining life of man.

In women all are formed before
birth. oogonia turn into oocytes
that enter the first of meiosis
(meiosis I). division however is
interrupted prophase and continues
only puberty. After the beginning
menses an egg cell released during
each period , if fecundated, it
finishes meioticdivision. The
oogenesis stops menopause
(cessation of the activity) and
the climacteric of life begins.