7.2 transcription & gene expression from Bob Smullen
Find a video lesson on this sub-topic at Dan Rott videos.
Fantastic animated tutorials from McGraw Hill Education – transcription and translation and Exons & Introns.
Control of Gene Expression
Regulated Transcription in under 4 minutes from ndsuvirtualcell.
Gene Regulation – a 10m video from Mr Andersen. He also explains Transcription & Translation in a 12m tutorial.
Epigenetics: epigenome: the symphony in your cells, a 5m video and here is Epigenetics from Learn.Genetics.