缺失或插入核苷酸引起三联体密码的改变 CATCAT CAT CAT CAT CAT -1 CAT CAC ATC ATC ATC ATC -1,+1 CAT CAC AXT CAT CAT CAT +3 CAX TXC ATX CAT CAT CAT 缺失或插入核苷酸引起三联体密码的改变 CAT CAT CAT CAT CAT CAT CAT CAC ATC ATC ATC ATC CAT CAC AXT CAT CAT CAT CAX TXC ATX CAT CAT CAT -1 -1,+1 +3