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Sunday, March 16, 2014

                                              Genetic Mutations


    Hello everyone thebestscienceblog12 here and today I will be talking about genes and genetic mutation. Genes are strands of material inside of DNA that control daily body functions.They are important because they determine what physical traits you inherit from your parents.

    Genetic mutations are a permanent change to a cell's RNA or DNA. When a mutation happens they are corrected by DNA repair. The DNA repair does this so the changes don't become permanent.

    When mutations become permanent they affect your health health in a bad way. Three examples where mutations infect your health are Sickle Cell Anemia, Cancer, and, Tay-Sachs Disease. Sickle Cell Anemia is a blood disease caused by a mutation in a protein-encoding cell. Cancer is caused when cells grow way to fast.
    Occasionaly a genetic mutation can be beneficial. When this happens scientists think that this is a force of evolution. An example is when a bird gets a longer beak to catch worms.

    Mutations can be caused during cell division when ther is an error in the copying of genetic material. Mutations can also be caused by exposure to harmful  chemicals or radiation.

                                    Links

bird evolution pic
cancer cell
sickle cell anemia pic

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