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基因——对生命进行操作在高倍显微镜下看我们的细胞时,会看到在细胞分裂时有一对对像小棒似的东西,那就是“染色体”。染色体平常就藏在细胞里。每个人的染色体有23对共46条,一半来自父亲,一半来自母亲。平常所说的“DNA”是“脱氧核糖核酸”的英文缩写,实际上一个染色体是由一个DNA分子组成的。DNA的化学结构是两条平行的链,像麻化一样拧在一起,要是把它拉直的话,它就像一个梯子,梯子的每一级台阶,是由四种名为核苷酸A、G、T、C中的一种所
Genes - Working on Life When looking at our cells under a high magnification microscope, we see a pair of rod-like things at the time of cell division, which is “chromosome”. Chromosomes are usually hidden in cells. Each person's chromosome 23 pairs of a total of 46, half from the father, half from the mother. Commonly referred to as “DNA ” is the abbreviation “DNA ”, in fact, a chromosome is composed of a DNA molecule. The chemical structure of DNA is two parallel chains, twisted together like a hemp, and if straightened it is like a ladder. Each step of the ladder is made up of four kinds of nucleotides called nucleotides A, G, T, C in a place