论文部分内容阅读
高中《生物》“遗传”一章中遗传病的系谱分析是常见的题型。系谱分析首先必须明确系谱的遗传类型，因此，除了熟悉显隐性遗传病的发病规律外，还要熟悉 以下一些遗传规律： （１）常染色体遗传病：男女得病（或表现某性状）的几率相等。 （２）伴性遗传病：男女得病（或表现某
The pedigree analysis of genetic diseases in the “Genesis” chapter of the High School is a common question. Pedigree analysis must first of all determine the genetic type of pedigree. Therefore, in addition to being familiar with the etiology of hereditary recessive hereditary diseases, I must be familiar with the following genetic laws: (1) Autosomal hereditary diseases: the probability of having a male or female disease (or expressing a trait) equal. (2) Associated genetic diseases: men and women get sick (or show a certain