Mitosis Meiosis Start Diploid End Haploid 46 46 46 46 23 23 23 23.

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Presentation transcript:

Mitosis Meiosis Start Diploid End Haploid 46 46 46 46 23 23 23 23

Interphase (S stage) prior to mitosis 4 strands of DNA at the start Chromatin duplicated Interphase (S stage) prior to mitosis Interphase (S stage) prior to meiosis Chromatin duplicated 4 strands of DNA at the start

Prophase of mitosis Prophase 1 of meiosis 4 strands of DNA at the start Nucleus dissolves Chromatin coils into chromosomes Prophase of mitosis Nucleus dissolves Chromatin coils into chromosomes Prophase 1 of meiosis Synapsis occurs Crossing over occurs (no animation) 4 strands of DNA at the start

Metaphase of mitosis Metaphase 1 of meiosis 4 strands of DNA at the start Chromosomes randomly pulled to middle of the cell Metaphase of mitosis Tetrads randomly pulled to middle of the cell Metaphase 1 of meiosis 4 strands of DNA at the start

Anaphase of mitosis Anaphase 1 of meiosis 4 strands of DNA at the start Chromatids pulled to opposite ends of the cell Anaphase of mitosis Chromosomes pulled to opposite ends of the cell Anaphase 1 of meiosis 4 strands of DNA at the start

Telophase of mitosis Telophase 1 of meiosis 4 strands of DNA at the start Cytokinesis splits the cell in half Nucleus regrows Telophase of mitosis Chromatids unwind back into chromatin Cytokinesis splits the cell in half Telophase 1 of meiosis Nucleus regrows 4 strands of DNA at the start

Prophase 2 of meiosis 4 strands of DNA at the start Mitosis End Result: two diploid cells Nucleus redissolves Prophase 2 of meiosis 4 strands of DNA at the start

Metaphase 2 of meiosis 4 strands of DNA at the start Mitosis End Result: two diploid cells Chromosomes pulled to middle of the cell Metaphase 2 of meiosis 4 strands of DNA at the start

Anaphase 2 of meiosis 4 strands of DNA at the start Mitosis End Result: two diploid cells Chromatids pulled to opposite ends of the cell Anaphase 2 of meiosis 4 strands of DNA at the start

Telophase 2 of meiosis 4 strands of DNA at the start Mitosis End Result: two diploid cells Cytokinesis splits the cells in half again Nucleus reforms in all four cells Telophase 2 of meiosis Chromatids unwind back into chromatin Meiosis End Result: four haploid cells 4 strands of DNA at the start