DNA Replication


The Process:

  1. DNA strands run anti-parallel to one another
  2. Enzyme helicase unzips the double helix and the hydrogen bonds between bases break
  3. Free nucleotides line up with their complimentary bases and hydrogen bonds form
  4. DNA polymerase allows the free nucleotides to attach to their complimentary bases
  5. A complimentary strand has been formed for either template strand
  6. Any fragments in the double helix are joined by ligase
  7. There are now two identical DNA molecules formed – each with a daughter and parent strand

Meselson and Stahl Experiment – Density Centrifugation Gradient