oogenesis Flashcards
1
Q
arrested twice what stages,
A
in prophase of meiosis 1
and then at metaphase in meiosis 2 until fertilization
2
Q
Embryo, what happens to Primordial germ cells
A
some mitotic divisions of oogonia within ovary and then turns into a primary oocyte
3
Q
embryo, primary oocyte, what happens to it
A
meiosis becomes arrested in prophase of division one
4
Q
Adult, what happens to the primary oocyte
A
it continues growth forming a egg coat and cortical granules
5
Q
adult, completion of meiosis 1, ovulation causes
A
secondary oocyte, to divide forming the first polar body and then is arrested at second metaphase
6
Q
fertilization, causes what to happen to the secondary oocyte
A
second polar body leaving 1 chromosome from the 4 to start with
