Find a video lesson on this sub-topic at Dan Rott videos.
Click on ‘DNA’ to work through a very detailed Interactive Tutorial from Wiley.
How DNA is packaged (1m 43s):
A DNA replication animation or click on ‘DNA Replication’ to see a more detailed Interactive Animation from Wiley or here are some fantastic animated tutorials from McGraw Hill Education – DNA Replication (in prokaryotes), DNA Replication fork & lagging & leading strands in DNA Replication.
Paul Andersen describes the molecular structure of DNA in What is DNA?. And here, he explains DNA Replication:
Here’s a TED-Ed lesson on what happens when your DNA is damaged.