（1）开卷考试，个人独立完成 （2）不须偷看别人的答案 （3）老师宣布收试卷时，试卷必须快速由每排的最左

Part I: Describe the following 10 terms (3 points each). (1) EF-G: a. its structure likes tRNA b. it is a translational elongation factor c. it binds to ribosome when associated with GTP

1. Please describe the main features of the DNA structure. (10 points) Key features: (1) Double helical structure (4’) (2) Two strands are held together in an antiparallel orientation (3’) by base paring (1’)

Describing the following terms (4 points each) 1. Cre recombinase 2. CSSR recombination 3. Mating-type switching 4. Mismatch repair 5. Polymerase switching 6. 30-nm fiber 7. Core histones

PART I: DESCRIPTION (2 points each) Your answer should describe what each item is and how it functions in the cell. Diagrams, structure and sequence information should be included in your answer, as necessary

Translation is the conversion of the information in the nucleic acid sequence to polypeptides of a specific amino acid sequence

一、三种不同的RNA聚合酶 二、RNA 聚合酶的组成 三、真核RNA聚合酶的活性

一、转录反应和转录方向 二、摸板链（-）和编码链（+）p.166 三、转录步骤：起始,延伸,终止

生物进化的证据 一、比较解剖学证据 二、胚胎学证据 三、细胞遗传学证据 四、生物地理学证据 五、生化与分子生物学证据

A重组DNA技术的理论基础 B基因的分子生物学 C基因工程的基本原理 D基因工程的支撑技术