The formation of a normal structure or organ in place of another at an abnormal site, as caused by the expression of a mutated hox gene.
An example is the formation of a leg from the head of a fruit fly in stead of the expected antenna. This is caused by a loss of function mutation in antennapedia hox gene.
Related forms: homeotic (adjective), homeotically (adverb).
Also called: homeotic transformation
See also: homeotic mutation, hox gene.