一. 体节的形成 体节（segment） 副节（parasegment） 裂缺基因（gap）建立空间结构的相邻平面，gap突变有一组体节缺失

一、 概念（每题 2 分，共 16 分） 1、单体 2、整倍体 3、重组修复 4、转基因动物 5、DNA 重组技术 6、基因重排 7、DNA 指纹 8、Chi 结构

一、 概念（每题 2 分，共 16 分） 1、基因工程 2、治疗性克隆 3、非整倍体 4、转基因动物 5、光修复 6、PCR 技术 7、母性影响 8、罗伯逊异位

How DNA as genetic materials was established (also summarized in er including structure and components Basic properties of DNA, i xt slide)

麻省理工大学：遗传学（Genetics）讲稿_lecture33_2

Linkage: Alleles of two genes segregate together during meiosis

Extensions of Mendelian Analysis Interactions between alleles of one gene. Multiple alleles, incomplete dominance, codominance Interactions between alleles of two genes. New phenotypes, epistasis Relationship between genotype & phenotype lethals, variable penetrance, conditional alleles

Cells reproduce via a cell cycle Meiosis is the key to sexual reproduction and Mendel’s rules Sex determination, sex linkage and chromosome nondisjunction supported the chromosome theory

Genetics is a different biology class Reading, attending lectures Andunderstanding the concept-notmemorizing Do problem sets

麻省理工大学：遗传学（Genetics）讲稿_lecture33_3