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At conception: There are almost always mutations when the cell is fertilized. This is what helps retain genetic diversity.

Pre-birth: Impurities in the blood stream of the mother (such as those attained through smoking or drinking).

Post birth: Carcinogens (cancer is a type of mutation), and other mutagens. (most known mutagens are carcinogens).

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14y ago
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12y ago

Mutation is caused when chunks of chromosomes cut taken or fall off. So the chromosome with the DNA causes a mutation which sometimes is helpful but mosty hard to live with.

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Q: What are some common causes of mutation?
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