mu·tant /ˈmjutṇt/
  突變異種
  mu·tant /ˈmjutṇt/ 形容詞
  mutant
       adj : tending to undergo or resulting from mutation; "a mutant
             gene"
       n 1: (biology) an organism that has characteristics resulting
            from chromosomal alteration [syn: mutation, variation,
             sport]
       2: an animal that has undergone mutation