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Anatomy & Physiology · Chapter 27

Oogenesis

Egg production uses meiosis too — but with a twist: the divisions are unequal, so one cell keeps almost everything and becomes the egg. Step through it.

Oogonium

Oogenesisone egg, not four

The stages

Vs sperm: meiosis is unequal, making 1 large egg + up to 3 tiny polar bodies (which die). Concentrating resources into one egg maximizes its chance to support an embryo.
📷 Reference image
A real labeled figure to compare with the interactive above.
Oogenesis reference figure
Oogenesis — labeled reference figure