Contents

THE MACHINERY OF INHERITANCE 1

Introduction 1

Cells and Chromosomes 2

Enzymes and Genes 5

Parents and Offspring 8

MUTATIONS 10

Sudden Change 10

Spontaneous Mutations 13

Genetic Load 16

Mutation Rates 19

RADIATION 22

Ionizing Radiation 22

Background Radiation 27

Man-made Radiation 30

DOSE AND CONSEQUENCE 32

Radiation Sickness 32

Radiation and Mutation 33

Dosage Rates 37

Effects on Mammals 40

Conclusion 43

SUGGESTED REFERENCES 47

The Genetic Effects of Radiation · 第 3 / 37 题