在孟德尔一对相对性状实验中，验证其假说正确与否的方法是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='20257' and id < 1771350 and id<>'1771350' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='20257' and id > 1771350 and id<>'1771350' order by id asc limit 5