oogenesis Flashcards

1
Q

arrested twice what stages,

A

in prophase of meiosis 1

and then at metaphase in meiosis 2 until fertilization

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2
Q

Embryo, what happens to Primordial germ cells

A

some mitotic divisions of oogonia within ovary and then turns into a primary oocyte

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3
Q

embryo, primary oocyte, what happens to it

A

meiosis becomes arrested in prophase of division one

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4
Q

Adult, what happens to the primary oocyte

A

it continues growth forming a egg coat and cortical granules

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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

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6
Q

fertilization, causes what to happen to the secondary oocyte

A

second polar body leaving 1 chromosome from the 4 to start with

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