September 21


Regulation of Gene Expression: Operons, Epigenetics, and Transcription Factors

By heheals

September 21, 2020

We learned about gene expression in biochemistry, which is comprised of transcription and translation, and referred to as the “central dogma” of molecular biology. But how is this process regulated? How does a cell know which genes to express and when? Well it’s pretty complicated, but let’s just get our feet wet by looking at operons, epigenetics, and transcription factors!


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  1. Hi my name is Allen am I am studying axolotls in planarian flatworms and how it would be possible to better the human genome with them if you could do a video on something like that that would be 😎

  2. I think it is very important education providers like yourself be very honest, accurate and portray scientific findings exactly how they are presented in journals and not exaggerate or distort them in any way such as what has been mentioned here at 3:28

    This is not what the literature is saying, there is on going debate in this area of research, how are you able to make a concluding statement like this with such confidence? when there is division between those currently researching in this area? You need to word this video more accurately to reflect the literature more honestly

  3. Hi professor Dave, how do you back up the statement at 3:28 about the evolution of the regulatory mechanisms very early on in life?? I want to press you on this because I think your making a huge statement here more than the scientific literature can prove or back up. Keen to hear your response

  4. I'm literally coming here from Khan Academy–thats how high calibre you are of an educator. To be fair, the KA video I didn't like was a one-off, as generally they are pretty good. If anyone is wondering–watch this video by Prof D instead of "Regulation of transcriptions" in the KA MCAT>Biomolecules>Gene Control.

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