how does spermatogenesis differ from oogenesisgive two points

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how does spermatogenesis differ from oogenesis
give two points

1.first spermatocyte generates two secondary spermatocyte but first oocyte generate a secondary oocyte and a primary polocyte during the first meiotic division
2.during the second meiotic division,two secondary spermatocyte form four sperms but the only secondary oocyte results in one ootid and a secondary polar body

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