An exact look-alike is someone who looks exactly like another person. The term is often used to describe twins, doubles, clones, and deadringers. Twins are two people who were born at the same time from the same mother and have identical or nearly identical physical characteristics. A DOUBLE is a person who looks very similar to another person, but is not necessarily an identical TWIN. A CLONE is an exact genetic copy of another organism, created through a process called cloning. A deadringer is someone who looks so much like another person that they could be mistaken for them.