oogenesis Flashcards
arrested twice what stages,
in prophase of meiosis 1
and then at metaphase in meiosis 2 until fertilization
Embryo, what happens to Primordial germ cells
some mitotic divisions of oogonia within ovary and then turns into a primary oocyte
embryo, primary oocyte, what happens to it
meiosis becomes arrested in prophase of division one
Adult, what happens to the primary oocyte
it continues growth forming a egg coat and cortical granules
adult, completion of meiosis 1, ovulation causes
secondary oocyte, to divide forming the first polar body and then is arrested at second metaphase
fertilization, causes what to happen to the secondary oocyte
second polar body leaving 1 chromosome from the 4 to start with