In humans at the end of first meiotic dividion, the male germ cells differentiate into
Spermatids
Spermatogonia
Primary spermatocytes
Secondary spermatocytes
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In development, nervous system (brain, spinal cord, nerve cells) is |
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In a mammalian sperm, spirally arranged mitochondria around an axial filament occurs in |
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Important sperm lysine used for dissolving egg covering is |
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Implantation occurs after |
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If mammalian ovum fails to get fertilized, which one of the following is unlikely? |
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