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50 pointtsss A mutagen is -a living thing that has undergone a mutation. -an agent that causes a mutation in DNA. -a mutation that has affected one gene. -a chemical that can poison living cells.

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6 votes

Answer:

an agent that causes a mutation in DNA.

Step-by-step explanation:

User Phayes
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5 votes

Answer:

It would be the second one

Step-by-step explanation:

User Mariella
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