On March 9, human life begins with a fertilized egg. How a fertilized egg develops into a complex organism with more than 200 cell types and 36 vital organs is one of the biggest problems in life sciences. Just as the operation of a computer program requires programming in a computer language, a "programming language" for human-set gene expression programs is called "chromosome open state." Recently, Chinese scientists have for the first time in the world to interpret how this "programming language" directs the gene expression of human embryos. The related research was published in the international top journal "Cell" on March 9. The results of this research have opened the door to understanding the regulation of human embryonic development gene expression, making China a leading international leader in the field of human development. This research will provide a theoretical basis for human prenatal and postnatal care. According to reports, almost all kinds of cells in our body have a large number of genes. However, about two days after human fertilization is very special. The cells in this period are very different from all other human cells. There is almost no gene expression in this period of embryo. How to make people's genes begin to express, which genes will be expressed first and which genes are expressed later, has always been a difficult point of research. Scientists have overcome the problem of lack of research materials, established a research method of micro-cells, and first studied the activation mechanism of human embryo genome in the world, and found the key molecule (Oct4) that initiates the expression of human genome. They found that in the evolutionary history, the first genes (old genes) were first expressed, and the last genes that appeared were often expressed later. The reason is that the cell setting program allows the old gene's regulatory switch to be turned on first. The study also revealed an important new mechanism for human evolution. Mutations in DNA cause human evolution. There are a class of DNA fragments called transposons in DNA sequences that often jump from one region to another. This beating produces DNA mutations. In this study, scientists have determined that transposons cause human evolution. The important reason for human evolution is that the transposon that is responsible for human evolution is mainly active in the embryo, causing new mutations in the human genome, and only mutations in the embryo. More likely to be passed on to future generations, causing human evolution. The result was completed by the Liu Jiang team of the Beijing Institute of Genomics of the Chinese Academy of Sciences and the team of the Chen Zijiang of the Reproductive Hospital of Shandong University and the Liu Jianqiao team of Guangzhou Medical University. The Liujiang team of the Beijing Institute of Genomics of the Chinese Academy of Sciences has long been committed to embryonic development research. It has published three consecutive articles in the journal Cell, revealing the inheritance of DNA methylation maps in mammals and fish, and updating the DNA methylation after fertilization. The traditional understanding of re-programming. (People's Network) Pond Monsta ,Pond Monsta Vacuum,Pond Monsta Vacuum Cleaning System,Vacuum Pool Cleaner Ningbo ProWay Optics & Electronics Co., Ltd. , https://www.proway-microtech.com