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Description: Below, human sperm surround an egg. 5 A female germ cell (an oogonium) develops into a primary oocyte as it replicates its DNA. Both types of cell are diploid. 6 Meiosis I in the primary oocyte results in a secondary oocyte and a first polar body. Unequal cytoplasmic division makes the polar body much smaller than the oocyte. Both cells are haploid. Polar bodies typically degenerate. 7 Meiosis II followed by unequal cytoplasmic division in the secondary oocyte results in a polar body and an ovum, or egg. Both cells are haploid. Picture Stats: Views: 168 Filesize: 210.23kB Height: 1161 Width: 761 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=48839 |