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Simulating DNA Replication

Procedure:  


You will build a DNA molecule that has the following structure:

A C T A C G A G T C T G
  1. Write in the matching nitrogen base to get the completed sequence.
  2. The bead with the Position 3 should be on the left. The bead with the Position 5 should be on the right.
  3. Un-snap the hydrogen bonds between the first eight pairs of nitrogen bases.
  4. Gently separate the two strands of molecules.
  5. Bring new nucleotides to the two strands to complete the nitrogen base pairs.
  6. Growth of the new strand proceeds one nucleotide at a time, from the bottom to the top.
  7. Unsnap the last hydrogen bonds, one at a time as you get to each pair.
  8. When you have completed the replication, you should have two identical DNA molecules.

View Animation of DNA Replication

 

 
  1. Draw your molecule in your lab journal.
  2. Describe the process of DNA replication in your lab journal.
 

 

 

 

These pages authored and maintained by Marcella Dawson. Revised 3/2002 . Copyright 1995 CRPC GirlTECH. All rights reserved. . Email your comments. These pages were developed through GirlTECH '96, a teacher training and student technology council program sponsored by the Center for Research on Parallel Computation (CRPC), a National Science Foundation Science and Technology Center.