在ABO血型系统决定基因中，A基因和B基因编码的酶分别是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='24540' and id < 2107947 and id<>'2107947' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24540' and id > 2107947 and id<>'2107947' order by id asc limit 5