Attack of the Clones

A clone is simply an identical copy. The word is used as both a verb, as in “to
clone” (make one) and a noun, as in “a clone” (have one or be one).
Genetically, the word clone can have two meanings. When geneticists talk
about cloning, they’re most often talking about copying some part of the DNA
(usually a gene). Geneticists clone DNA in the lab every day — the technology
is simple, routine, and unremarkable.