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从细胞生物学研究可以看到在机体的整体、器官、细胞以至基因都存在着正负反馈的“自稳”调节机制,在宏观上表现为机体与环境相互作用的调节,在微观上为遗传信息的调节。在转录水平上,仅DNA与组蛋白不结合部分起调节作用;非组蛋染色质蛋白则起特异调节作用。基因是个体遗传信息的传递者;但基因也受有害因子的损伤而致畸,具不修复者可传至后代。
From the study of cell biology, it can be seen that there is a “self-regulation” mechanism of positive and negative feedback in the whole body, organs, cells and genes of the body, which is macroscopically the regulation of the interaction between the body and the environment and the micro- Information regulation. At the transcriptional level, only DNA and histone do not bind part of the regulatory role; non-histone chromatin proteins play a specific regulatory role. Genes are the transmission of individual genetic information; but genes are also damaged by harmful factors and teratogenic, with no repair can be passed to future generations.