Human oocytes initiate meiosis during fetal life and arrest
for decades before completing cell division. This prolonged arrest underlies
the maternal‑age–related
increase in aneuploidy observed in human embryos.

Which statement best reflects the timing and regulation of
meiotic divisions in human oocytes?

Question

Human oocytes initiate meiosis during fetal life and arrest
for decades before completing cell division. This prolonged arrest underlies
the maternal‑age–related
increase in aneuploidy observed in human embryos.

Which statement best reflects the timing and regulation of
meiotic divisions in human oocytes?

Accepted Answer

Meiosis
II is completed only following fertilisation

Answer

Completion
of meiosis II occurs independently of fertilisation

Answer

Both
meiotic divisions are completed prior to ovulation

Answer

Meiosis
I is completed only after sperm entry

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Human oocytes initiate meiosis during fetal life and arrest for decades before ...

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