How might exposure to a harmful chemical cause a mutation at the molecular level?

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Will give ! ! widentify the advantages and disadvantages of renewable and nonrenewable energy resources.

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.