Plectonemes are the analog of the twisted tangles of telephone cords, and can form in DNA that is pulled through a nanoscale channel. They are called plectonemes. They are the analog of the twisted ...
In a way, sequencing DNA is very simple: There's a molecule, you look at it, and you write down what you find. You'd think it would be easy—and, for any one letter in the sequence, it is. The problem ...