The result of meiosis in most animals is the formation of sperm
and egg cells. Spermatogenesis produces mature sperm cells and
follows the sequence previously described. All four products of
meiosis often acquire a flagellum for locomotion and a caplike
structure that aids in the penetration of the egg. Oogenesis produces
a mature ovum or egg. It differs from spermatogenesis in that
only one of the four meiotic products develops into the functional
gamete. The other products of meiosis are called polar bodies and
eventually disintegrate. In some animals the mature egg is the
product of the first meiotic division and only completes meiosis if
it is fertilized.
No comments:
Post a Comment