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Comparative Outline of Oogenesis and Spermatogenesis
Oogenesis |
Spermatogenesis |
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Oogonium (female germ cell) |
Spermatogonium (male germ cell) |
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Germ cells committed to Meiosis |
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Primary Oocyte |
Primary Spermatocyte |
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First Meiotic Division |
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Secondary Oocyte |
First Polar Body |
Secondary Spermatocyte |
Secondary Spermatocyte |
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Second Meiotic Division |
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| Ovum and Second Polar Body |
4 Spermatids |
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1 Ovum ( 1 viable gamete) |
4 Spermatozoa ( 4 viable gametes) |
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This page is part of the Developmental Biology ONLINE! web site.
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Send comments to:
Dr. Steven Scadding ( scadding@uoguelph.ca ) or Sandra Frombach (sfrombac@uoguelph.ca),
Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1.
