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Transcript
Topic: DNA Replication Essential Question: How does DNA make a copy of itself? 6 STEPS st 1 step: Double helix must unwind, this occurs during “S” phase. nd 2 step: DNA helicase (enzyme) breaks apart H-bonds, separating the double stranded DNA. 3rd step: Once separated enzymes hold strands apart. 4th step: DNA Polymerase (enzyme) adds nucleotides according to the base pairing rules. th 5 step: DNA polymerase does proofreading – only 1 mistake in 1 billion A-T / G-C pairs after proofreading th 6 step: 2 new double helices
