Monday, February 1, 2010

7th Grade: Meiosis Reflection: differences between mitosis and meiosis

here are MANY differences between meiosis and mitosis. One is that mitosis creates a diploid cell and meiosis creates a haploid cell. Haploid-half of the chromosomes. Diploid- 100% of the chromosomes. The reason for meiosis creating haploids is that meiosis creates ONLY reproduction cells, like sperm cells and egg cells. If it had 100% like diploids than the offspring's would get 200% with the sperm and egg cells combined. Another difference is that mitosis only goes through ONE separation of the cell creating two daughter cells, and meiosis goes through TWO separations creating four daughter cells. Mitosis has seven phases and meiosis has eighteen phases.
I am not sure of an experiment that would help understand this concept but the activity we did with the Venn diagram was useful. Maybe something could be looking and actual cell undergoing meiosis and comparing it to an actual cell undergoing mitosis. This would help because we would be able to see what really hapens and with what we know already we could create theories and then see if they are right.

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