Chapter 23

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External Fertilization Eastern spotted newt spots newt
External Fertilization An example of an “egg sac.” “egg sac’s” actually contain developing embryos.
Page 1 and 2: Chapter 23 Meiosis and Sexual Repro
Page 3 and 4: (I) Sexual Reproduction • Two par
Page 5 and 6: (A) Gametes • Sex cells 1. Males
Page 7 and 8: Fertilization and the Stages of Mit
Page 9 and 10: (D) Diploid • Contain the full nu
Page 11 and 12: (II) Meiosis • Known as Reduction
Page 13 and 14: (III) Stages of Meiosis • In meio
Page 16 and 17: Second Division
Page 18 and 19: Key SS = single-stranded DS = doubl
Page 20 and 21: Prophase I • Replication of SS ch
Page 22: Metaphase I • Alignment of the te
Page 25 and 26: Second Meiotic Division
Page 27 and 28: Metaphase II • Tetrads line up in
Page 29 and 30: Telophase II • Both daughter cell
Page 31 and 32: (III) Sexual Reproduction in Animal
Page 33 and 34: (B) Hermaphrodite • Contain both
Page 35 and 36: Spermatogenesis • Primary spermat
Page 37 and 38: Comparison of Ova and Sperm • Egg
Page 39 and 40: Fertilization • Union of a haploi
Page 41 and 42: Internal Fertilization • Takes pl
Page 43 and 44: External Fertilization • Eggs are
Page 45: External Fertilization Eastern spot
Page 49 and 50: External Fertilization A frog and m
Page 51: External Fertilization Close-up of

Chapter 23

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