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科技界普遍认为在下世纪初,就会描绘出第一张有关人类生命秘密的包涵30亿个碱基对的 DNA 的排列图谱。这种揭示人的生命和遗传秘密的方法,要采用现代技术对人的基因组进行分析。现代科学认为,地球上各人种之间肤色、身高、眼睛颜色、头发形状有差异,同一种人乃至同一家庭中,不同个体之间外表差异,在很大程度上取决于人体遗传细胞中的染色体。组成细胞染色体的基本材料是4种核苷酸,即腺嘌呤
It is generally accepted by the scientific and technological community that at the beginning of the next century, the first map of 3 billion base-pair DNAs covering the secrets of human life will be drawn. This method of revealing human life and genetic secrets requires the use of modern technology to analyze the human genome. In the modern science, there is a difference in skin color, height, eye color and hair shape between people of all kinds on the earth. The appearance differences between individuals in the same family and in the same family largely depend on chromosome. The basic material that makes up the cell chromosome is four kinds of nucleotides, namely adenine