Which of the following professional s are more likely to run the risk of permanent change in their c...........

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Which of the following professional(s) are more likely to run the risk of permanent change in their cell’s DNA?

1. Researchers using carbon 14 isotope

2. X-ray technician

3. Coal miner

4. Dyer and painter

Select the correct answer using the codes given below:

2 only

1, 2 and 3

1, 2 and 4

1, 3 and 4

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Explanation:

Deoxyribonucleic acid ( DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses. DNA and RNA are nucleic acids; alongside proteins, lipids and complex carbohydrates (polysaccharides), they are one of the four major types of macromolecules that are essential for all known forms of life. Most DNA molecules consist of two biopolymer strands coiled around each other to form a double helix.