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Meiosis nerea
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TRabajo de clase para Biología MEC-BC. IES Pedro de Luna- 2011- Zaragoza SPAIN

TRabajo de clase para Biología MEC-BC. IES Pedro de Luna- 2011- Zaragoza SPAIN

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  • 1. Meiosis Nerea López Peirona 4ºB
  • 2. Hello again! Now I talk about meiosis, it is amazing!
  • 3. Early prophase I During early prophase it is the same as in mitosis Chromosomes Nuclear envelope Spindle pole
  • 4. Prophase I Now, during prophase, also occurs the crossing over, where the homologous chromosomes exchange information. Spindle fiber
  • 5. Metaphase I The chromosomes align in the middle
  • 6. Anaphase I Chromosomes splitting apart (not chromatids)
  • 7. Telophase I Each chromosome separates from the other, making two news.
  • 8.
    • After telophase I
    • the second meiotic division occurs (without DNA duplication before),
    • as a final result we have 4 haploid cells)
  • 9. See you soon!