29.1 Introduction 29.2 Fly development uses a cascade of transcription factors 29.3 A gradient must be converted into discrete compartments 29.4 Maternal gene products establish gradients in early embryogenesis 29.5 Anterior development uses localized gene regulators

11.1 Introduction 11.2 Lytic development is divided into two periods 11.3 Lytic development is controlled by a cascade 11.4 Functional clustering in phages T7 and T4 11.5 Lambda immediate early and delayed genes are needed for both lysogeny and the lytic cycle

10.1 Introduction 10.2 Regulation can be negative or positive 10.3 Structural gene clusters are coordinately controlled 10.4 The lac genes are controlled by a repressor 10.5 The lac operon can be induced 10.6 Repressor is controlled by a small molecule inducer

19.1 Introduction 19.2 The nucleosome is the subunit of all chromatin 19.3 DNA is coiled in arrays of nucleosomes 19.4 Nucleosomes have a common structure 19.5 DNA structure varies on the nucleosomal surface

15.1 Introduction 15.2 Insertion sequences are simple transposition modules 15.3 Composite transposons have IS modules 15.4 Transposition occurs by both replicative and nonreplicative mechanisms

《结构化学基础》课程PPT教学课件：第四章 分子对称性和群论基础

第一节 DNA是遗传物质 第二节 DNA的结构 第三节 DNA的复制

第三章不饱和烃 第一节烯烃 一、烯烃的结构 烯烃:分子中含碳碳双键的烃。通式为CnH2n

第十四章氨基酸和蛋白质 第一节氨基酸 一、概述 分子中含氨基的羧酸称为氨基酸

一.分子间作用力 非化学键(共价键,离子键,金属键)的分子间相互作用