transversion

詳細解釋：

trans.ver.sion

n.（名詞）
A point mutation in which a purine is replaced by a pyrimidine, or a pyrimidine is replaced by a purine.
轉置點，易位點：用嘧啶代替嘌呤或用嘌呤代替嘧啶的點突變

來源：
Probably trans-
Probably trans-
(in)version
(in)version