Giáo trình

Biology

Introduction

Tác giả: OpenStaxCollege

Chromosomes are threadlike nuclear structures consisting of DNA and proteins that serve as the repositories for genetic information. The chromosomes depicted here were isolated from a fruit fly’s salivary gland, stained with dye, and visualized under a microscope. Akin to miniature bar codes, chromosomes absorb different dyes to produce characteristic banding patterns, which allows for their routine identification. (credit: modification of work by “LPLT”/Wikimedia Commons; scale-bar data from Matt Russell)

The gene is the physical unit of inheritance, and genes are arranged in a linear order on chromosomes. The behaviors and interactions of chromosomes during meiosis explain, at a cellular level, the patterns of inheritance that we observe in populations. Genetic disorders involving alterations in chromosome number or structure may have dramatic effects and can prevent a fertilized egg from developing altogether.

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Tái sử dụng

OpenStaxCollege
9 Giáo trình | 1305 Tài liệu

Mục lục

Biology

Preface to Biology
Unit 1. The Chemistry of Life
Unit 2. The Cell
Unit 3. Genetics
Unit 4. Evolutionary Processes
Unit 5. Biological Diversity
Unit 6. Plant Structure and Function
Unit 7. Animal Structure and Function
Unit 8. Ecology
Appendix

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