BIOB11H3 Lecture 13: BIOB11 – Lecture 13
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Conservative: the two original strands would remain together (after serving as templates), as would the two newly synthesized strands; one of the daughter duplexes would only contain newly synthesized dna. Semiconservative: each of the daughter duplexes should consist of one complete strand inherited from the parental duplex and one complete strand that has been newly synthesized. Dispersive: the parental strands would be broken into fragments, and the new strands would be synthesized in short segments, then the old & new segments would be joined together to form a complete strand. The daughter duplexes would contain strands that were composites of old and new dna. Topoisomerase: enzyme that alters the supercoiling of dsdna; cuts one or both strands of the dna; aids in transcription and replication. Dna polymerase: synthesize new dna strands by assembling nucleotides; essential to dna replication and usually work in pairs to create two identical dna strands from a single original dna molecule.