Regulating Gene Expression

At transcription (oestrogen & lac operon), post-transcription (pre-mRNA to RNA) and post-translation. Epigenetics.

This course currently covers the following:

Regulation of gene expression at the level of transcription. Here I use the syllabus-specific examples of oestrogen in eukaryote gene regulation (AQA) and the lac operon in prokaryote gene regulation. in the second video I cover epigenetics: how our environment causes methylation and acetylation of genes which changes their level of transcription.

Your Teacher


I'm a qualified biology teacher and online tutor who makes videos on A level biology topics which are clear in their explanations, straightforward in their format and mark-earning in their exam question hints.

I LOVE my subject! But I also know that many A level students want to 'know what they need to know' and need help to unlock the marks in the exams, so I have formatted my videos to be straightforward, clear and pacy. They may not be 'beautiful' (I am no techy!) but the content is high quality.


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Frequently Asked Questions

How long do I have access to the course?
For a calendar year from the date of subscription. Even If this runs past the end of the academic year I'm that it will be still worth the money (about the same as an hour of private tuition).
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You will get immediate and free access to any further content videos that I upload, which will last until the end of your subscription.
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If you have any doubts check out my YouTube channel (biology carol) where you can see a few examples of my videos. As this is digital service, sadly I am unable to offer refunds.
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What If I don't need to subscribe for a full 12 months?
Sadly, only subscriptions for a full calendar year are possible - I cannot get subscriptions to end at the end of summer🙁. I hope you will agree that the quality of the content and my use of exam questions make your subscription good value for money, even if you might stop using them before your subscription runs out. Remember that you will get 25% off your Year 1 and Year 2 bundle to make next year's subscription even better value! How this works will be revealed when you subscribe to the Yr 1 (AS) biology bundle. Go on - you know you want to 😂!

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