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纵观近年各地高考题,几乎每年都出现与人类遗传病相关的遗传方式推断及计算型试题,且大都为占分数比值较大的非选择题。这类试题往往是分离定律、自由组合定律与伴性遗传的综合运用,对基本原理的理解与掌握程度要求较高,需具备较强的逻辑推断能力,大多数学生对于此类问题都觉得错综复杂,难以准确应付。本文引导学生通过比较、归纳与总结得出该类题型解题的一般规律与原则,有利于学生理清解题思路,把握解题方法。
Throughout the college entrance examination in recent years, almost every year there are genetic inference associated with human genetic disease and computational test questions, and mostly accounted for a large fraction of non-multiple-choice questions. Such questions are often the separation law, the combination of free combination law and the combination of genetic, basic understanding and mastery of the higher requirements, need to have a strong ability to reason inference, most students feel complicated for such issues , It is difficult to deal with accurately. This paper guides students through the comparison, summing up and summarizes the general rules and principles of solving such questions, is conducive to students to clarify the problem-solving ideas, grasp the problem-solving methods.