Duplication

Duplication, duplicate, and duplicator may refer to:

== Biology and genetics == Gene duplication, a process which can result in free mutation Chromosomal duplication, which can cause Bloom and Rett syndrome Polyploidy, a phenomenon also known as ancient genome duplication Enteric duplication cysts, certain portions of the gastrointestinal tract Diprosopus, a form of cojoined twins also known as craniofacial duplication Diphallia, a medical condition also known as penile duplication