近几年高考遗传题中的不完全显性、某些基因致死、基因互作、多因一效、表型模拟等“例外”现象持续出现,这种考题不仅可以有效地考查考生对遗传基本规律的掌握,还可以考查考生获取信息的能力及综合运用知识的能力.高考题对遗传与进化的考查往往以遗传学实验为背景,结合孟德尔遗传的基本规律、伴性遗传、减数分裂、生物变异、生物进化、基因工程、育种等相关知识联系,产生遗传的特殊情形,试题多以非选择题形式出现.学生对教材中正常的遗传问题比较熟悉,对数据的运 In recent years, college entrance examination genetic problems are not completely dominant, some of the genes lethal, gene interaction, due to more than one effect, phenotype simulation “Exception ” phenomenon continues to appear, this test can not only effectively examine the candidates The basic law of inheritance, you can also examine the candidate’s ability to obtain information and the ability to comprehensively use knowledge.Generation and evolution of college entrance examination test often genetic test as the background, combined with the basic law of Mendelian inheritance, The number of test questions in the form of non-multiple choice questions.The students are familiar with the normal genetic problems in the textbook, the data of the transport