a cell starts making too many proteins that trigger a cell to divide. a cell stops making proteins that normally tell a cell to stop dividing. abnormal proteins may be produced that work differently to normal.
Cancer is caused by changes (mutations) to the DNA within cells.
The DNA inside a cell is packaged into a large number of individual genes, each of which contains a set of instructions telling the cell what functions to perform, as well as how to grow and divide.
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Answer:
a cell starts making too many proteins that trigger a cell to divide. a cell stops making proteins that normally tell a cell to stop dividing. abnormal proteins may be produced that work differently to normal.