DNA adducts refer to what in toxicology?

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Multiple Choice

DNA adducts refer to what in toxicology?

Explanation:
DNA adducts are covalent attachments of reactive chemicals to DNA bases. This kind of modification can persist and disrupt normal base pairing, leading to mutations during replication that may initiate carcinogenesis. The key idea is the chemical forms a true covalent bond with DNA, not just a weak or indirect interaction. Non-covalent DNA–protein contacts aren’t adducts, DNA methylation changes are epigenetic alterations without a covalent bond to DNA, and crosslinking to proteins represents a different type of lesion. So the concept centers on a chemical forming a covalent bond to DNA, setting the stage for possible cancer development.

DNA adducts are covalent attachments of reactive chemicals to DNA bases. This kind of modification can persist and disrupt normal base pairing, leading to mutations during replication that may initiate carcinogenesis. The key idea is the chemical forms a true covalent bond with DNA, not just a weak or indirect interaction. Non-covalent DNA–protein contacts aren’t adducts, DNA methylation changes are epigenetic alterations without a covalent bond to DNA, and crosslinking to proteins represents a different type of lesion. So the concept centers on a chemical forming a covalent bond to DNA, setting the stage for possible cancer development.

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