: The enzyme polymerase is connecting nitrogenous bases, hydrogen bonds are forming between nitrogenous bases, 2nd step of DNA replication, : 2 double stranded DNA molecules, the result of replication, 2 copies of DNA, 3rd step of DNA replication, : The enzyme helicase is unzipping the strand of DNA, Hydrogen bonds are being broken between nitrogenous bases, 1st step of DNA replication,

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