Posted: May 19, 2014 3:45 pm
by DavidMcC
... I now have my old course notes (mainly printed by the lecturers) in front of me.
Section 4.1 Regulation at the structural level. Active genes: - unfolding of chromatin during transcription
Electron micrograph of active genes.
During transcription, the compact chromatin opens up and long loops of DNA being transcribed is visible.

(And, yes, I admit that I used the wrong word previously, OK? Obviously, I have not included the micrograph.)