DNA methylation
DNA methylation is about changes to the DNA that are not related to the base sequence. The process, locations and general biochemistry is fairly well understood. But DNA methylation impacts on gene regulation and that aspect is not well understood.
DNA methylation inhibits transcription. So this is an "off switch". And DNA methylation encourages the combination of DNA with histones, which is certainly part of the inhibitory mechanism.
supporting documentation
https://app.box.com/s/1yrat8fov74cplk...
“Box no longer opens Word/Excel files directly in the browser. Viewers may see a preview page or a download button — the files are still safe and exactly the same.”
This video was an evolutionary development from a lesson plan I developed in 2001 while teaching in Suburban Denver, Colorado. My journey into the structure of DNA was all about a confirmation of this model. After literally years of confusion I determined that the model is correct. (the journey is documented through my videos.) I made it into a lesson plan under Creative Commons. I would love to see it widely distributed.
• Catch your breath DNA Model Video for Teac...