分子遗传学认为,生物千差万别,根本的差别在蛋白质的氨基酸顺序上。其信息储存于遗传物质脱氧核糖核酸的核苷顺序中。任何一个多肽链的顺序和氨基酸组成是遗传信息的一个比较直接的表现。酶蛋白由一条或多条多肽链组成,因此酶在结构上的差异主要来源于基因。酶蛋白又可控制代谢类型,最后表现为性状及功能的差异。因此,同工酯酶谱可作为从分子水平来识别基因存在和表达的一种生化指标。樟子松在原始森林中经过长期自然选 Molecular genetics that biological diversity, the fundamental difference in protein amino acid sequence. The information is stored in the nucleotide sequence of the genetic material deoxyribonucleic acid. The sequence and amino acid composition of any polypeptide chain is a direct manifestation of genetic information. Enzyme proteins consist of one or more polypeptide chains, so the structural differences in the enzymes are mainly derived from the genes. The enzyme protein can control the type of metabolism, the final performance of the traits and functional differences. Therefore, isozyme patterns can be used as a biochemical indicator of gene expression and expression at the molecular level. Pinus sylvestris in the primeval forest after long-term natural selection