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Cellular Division
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Meiosis Animation

Meiosis Animation

Slide 93

Gametogenesis

Gametogenesis

Oogenesis or Spermatogenesis

Slide 94

Spermatogenesis

Spermatogenesis

Occurs in the testes

Two divisions produce 4 spermatids

Spermatids mature into sperm

Men produce about 250,000,000 sperm per day

Slide 95

Spermatogenesis in the Testes

Spermatogenesis in the Testes

Spermatid

Slide 96

Spermatogenesis

Spermatogenesis

Slide 97

Oogenesis

Oogenesis

Occurs in the ovaries

Two divisions produce 3 polar bodies that die and 1 egg

Polar bodies die because of unequal division of cytoplasm

Immature egg called oocyte

Starting at puberty, one oocyte matures into an ovum (egg) every 28 days

Slide 98

Oogenesis in the Ovaries

Oogenesis in the Ovaries

Slide 99

Oogenesis

Oogenesis

Slide 100

Comparing Mitosis and Meiosis

Comparing Mitosis and Meiosis

Slide 101

Comparison of Divisions

Comparison of Divisions

Slide 102

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