I.什么是生态学 Ⅱl 为什么要研究生态学? ⅡIl 如何研究生态学?

32.1 Biologists name organisms in a systematic way. The Classification of Organisms. Biologists name organisms using a binomial system. Species Names. Every kind of organism is assigned a unique name. The Taxonomic Hierarchy. The higher groups into which an organism is placed reveal a great deal about the organism

49.1 The bodies of vertebrates are organized into functional systems. Organization of the Body. Cells are organized into tissues, and tissues are organized into organs. Several organs can cooperate to form organ systems

1.1 Biology is the science of life. Properties of Life. Biology is the science that studies living organisms and how they interact with one another and their environment

Genes vary in natural populations. Gene Variation Is the Raw Material of Evolution. Selection acts on the genetic variation present in populations, favoring variants that increase the likelihood of survival and reproduction

When Mendel did his crosses of pea plants, he knew what a pea plant was supposed to look like: a small plant with green leaves, purple flowers, and smooth seeds. But if all pea plants were like that, he would never have been able to sort out the rules of heredity—in a cross of green peas with green peas, there would have been no visible differences to reveal the

一、高等植物的遗传学特征 二、植物的基本特征 三、遗传操作的简易性 四、整株植物的再生性 五、染色体的多倍体性

A高等哺乳动物基因工程的基本概念 B高等哺乳动物的受体系统 C高等哺乳动物的载体系统 D高等哺乳动物的基因转移 E利用哺乳动物工程细胞生产重组蛋白

A酵母菌作为表达外源基因受体菌的特征 B酵母菌的宿主系统 C酵母菌的载体系统 D酵母菌的转化系统 E酵母菌的表达系统 F利用重组酵母生产乙肝疫苗

A大肠杆菌作为表达外源基因受体菌的特征 B外源基因在大肠杆菌中高效表达的原理 C大肠杄菌基因工程菌的构建策略 D基因工程菌的遗传不稳定性及其对策 E利用重组大肠杆菌生产人胰岛素