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15 January, 10:27

How do some cells become brain cells and others become skin cells, when the DNA in ALL the cells is exactly the same. In other words, if the instructions are exactly the same, how does one cell become a brain cell and another a skin cell?

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  1. 15 January, 13:00
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    This occurs through the process of cell specialization, where in some cells genes are active whereas in others they are not.
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