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@Dhurba Benerjee I'm answering your question to my comment here because I need to include a diagram. As I said before ovum at the time of ovulation is arrested at the metaphase (M phase in cell cycle) 2nd meiotic division. This arrest is caused by the presence of two types of cytoplasmic activity 1. MPF - maturation promoting factor 2. CSF - Cytostatic ...



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