getting to zygote Flashcards

1
Q

primordial germ are haploid or diploid?

A

diploid

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2
Q

PGCs arise from ….. and migrate to the …..wall of the …… when?

A

epiblast/ posterior wall of the secondary yolk sac at the end of three weeks

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3
Q

how many PGCs migrate from yolk sac to gonads? what happens to them?

A

1000 cells. they undergo rapid mitotic division to produce diploid cells.

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4
Q

what happens to misdirected Germ cells if they survive?

A

they may develop into teratomas, which are bizarre growths

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