Answer:

• Chromosome abnormalities often happen due to one or more of these: Errors during dividing of sex cells (meiosis) Errors during dividing of other cells (mitosis) Exposure to substances that cause birth defects (teratogens)

• Cancer is produced by unregulated cell division caused by a failure of the cell cycle's regulatory processes. 

Cancer is produced by unregulated cell division caused by a failure of the cell cycle's regulatory processes. A mutation in the DNA sequence of a gene that codes for one of the regulatory molecules triggers the loss of control. Incorrect instructions result in a protein that does not function properly.

Explanation:

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