Neomorph
The Century Dictionary and Cyclopedia
noun.
In
biology
, a part or organ, or a modification of a part or organ, which has recently been generated or acquired.
the GNU version of the Collaborative International Dictionary of English
noun.
A structure, part, or organ developed independently, that is, not derived from a similar structure, part, or organ, in a preexisting form.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
a gain of function
mutation
that causes novel gene function.
Etymologically Related
amorph
antimorph
hypermorph
hypomorph
Form
neomorphic