|Two or more organisms are clones if they are genetically identical. Clones can occur in nature without humans being involved. |
When a bacterium reproduces asexually to produce a colony, all the bacteria are clones of one another. Except for any mistakes (mutations) that may have arisen during DNA replication, they will all be genetically identical.
When a plant such as a creeping buttercup (Ranunculus repens) reproduces by sending off runners that eventually become detached from the parent plant, the new plants that result and the original parent plant are clones.