Duplication means creating a copy or replica of something. It refers to making an exact or similar version of an object, document, or piece of information. Full definition
There can be multiple originals of a transferable record, so originality was not the key test for avoiding duplication of claims. (slaw.ca)
It was believed that reducing the amount of duplication in case reporting would thereby reduce the costs of creating content and at the same time simplify legal research. (slaw.ca)
Other recent work has questioned the consequences of gene duplications in flowering plants as well. (sciencemag.org)