The permutation by duplication mechanism for producing a circular permutation. First, a gene is duplicated in place. Next, start and stop codons are introduced, resulting in a circularly permuted gene.
<a href="//commons.wikimedia.org/wiki/User:Quantum7" title="User:Quantum7">Spencer Bliven</a> and <a href="https://en.wikipedia.org/wiki/User:Andorsch" class="extiw" title="wikipedia:User:Andorsch">Andreas Prlic</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>