DNA, knots, recombination, substrate
We present a model of how DNA knots and links are formed as a result of a single recombination event, or multiple rounds of (processive) recombination events, starting with an unknotted, unlinked, or a (2,m)-torus knot or link substrate. Given these substrates, according to our model all DNA products of a single recombination event or processive recombination fall into a single family of knots and links.
Buck, Dorothy and Erica Flapan. A Model of DNA Knotting and Linking. Knot Theory for Scientific Objects, ed. Akio Kawauchi. Proceedings of the International Workshop on Knot Theory for Scientific Objects: OCAMI Studies Vol 1(1), 2007, 75-83.