7.1 dna & replication from Bob Smullen
Find a video lesson on this sub-topic at Dan Rott videos.
How DNA is packaged (1m 43s):
Here are some fantastic animated tutorials from McGraw Hill Education – DNA Replication (in prokaryotes) and DNA Replication fork.
HL Replication in a 5m video: Protein Synthesis.
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.
DNA Replication, Transcription, & Translation in 10m from roxprice:
Many assessment statements are also covered by Stephanie Castle (with more being added all the time).
An animated tutorial from McGraw Hill Education – structural basis of DNA Replication
In Crash Course Biology #10 – DNA Structure & Replication, Hank introduces us to that wondrous molecule DNA and explains how it replicates itself in our cells.
For the Polymerase Chain Reaction – click on ‘PCR’ to see an Interactive Animation from Wiley or here for two animated tutorials from McGraw Hill Education – PCR. Or why not use PCR yourself in a Virtual Lab from Learn.Genetics (labs on PCR & DNA extraction). Or there’s a 12m PCR for A level video; a 4m video on PCR here; and from the DNA Learning Center (1m 28s):
The PCR song:
Great animation from McGraw-Hill and here’s a 4m video from Mr Andersen on the Meselson-Stahl experiment or from Youreka Science the most beautiful experiment in Biology (7m 33s).
Transcription & translation, a 2m 51s animation:
This will take you step-by-step through transcription & translation and here is a translation animation – short and simple.
In Crash Course Biology #11 – Transcription & Translation, Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins.
Some past paper questions answered by IB Blueprint: DNA Replication, Transcription & Translation – Past Exam Paper 1 Questions: Paper 2 Questions: Question 17 [Conservation of DNA sequence during replication]