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When was our planet created, according to James Ussher?
Spermatids
Immature male gametes formed from secondary spermatocytes after meiosis II in the process of spermatogenesis.
Spermatogonium
A type of male germ cell involved in spermatogenesis that divides to produce sperm cells.
Secondary Spermatocyte
A male gametocyte that originates from the division of a primary spermatocyte and undergoes meiosis II to form spermatids.
Primary Spermatocyte
An intermediate cell type in the process of sperm development, arising from a spermatogonium and giving rise to secondary spermatocytes after meiosis I.
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