ZOL 341 Lecture 3 Outline of Last Lecture I Molecular structure of DNA II Complementary base pairing III Transcription IV Translation V The genetic code VI Evolution Outline of Current Lecture II Base stacking III DNA replication Current Lecture base stacking the offsetting of adjacent base pairs so that their planes are parallel leads to the helical twist DNA replication bidirectional and semiconservative general mechanism of DNA replication is the same in all organisms some differences have developed in the replication proteins and enzymes three models all shared the idea that the original strands of the duplex act as templates for daughter strand synthesis semiconservative conservative dispersive attributes of DNA replication shared by all organisms 1 each strand of the parental DNA molecule remains intact during replication These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute 2 each parental strand serves as a template for formation of an antiparallel complementary daughter strand 3 completion of replication results in the formation of 2 identical daughter duplexes composed of one parental and one daughter strand requirements for DNA replication a template of single stranded DNA raw materials to be assembled into a new nucleotide strand enzymes and other proteins that read the template and assemble the substrates into a DNA molecule stages of replication initiation unwinding elongation termination consensus sequences the nucleotides found most often at each position of DNA in the conserved region
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