Spermatogenesis Possible answers No Answers Chosen Stem cells self-renew throughout life Produces one large haploid gamete and three haploid polar bodies Produces four haploid, identical gametes meiosis begins before birth and only completes if fertilization occurs Stems cells = spermatogonia Oogenesis Stem cells oogonia Stem cells stop self-renewing before birth No Answers Chosen meiosis begins and ends continuously throughout life

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