At present, the eel genome has an absolute number of 100 chromosomes, which has led to the largest number of chromosomes in the currently known species. The Carp Genome Project jointly developed by the Chinese Academy of Fishery Sciences and the Beijing Institute of Genomics, Chinese Academy of Sciences, has successfully completed the whole genome sequencing of carp, and mapped the whole genome sequence. The results of this research will hopefully produce a new species of carp that has less spiny meat. Genes are a piece of DNA on a chromosome, and most biological traits are controlled by multiple genes. To understand the genetic mechanism of traits and use them in industry, only the overall level of all genes in the organism is Only at the level of genome analysis can we grasp the genetic nature of trait formation. The genome of an organism refers to all the genetic information contained in the DNA of the organism. Whole-genome sequencing is the process of parsing out all the DNA sequences of an organism and splicing and assembling the entire sequence according to its original sequence in the chromosome. As another important economic species genome project following China's genomic projects such as rice, silkworm, cucumber, and oysters, the "Squid Genome Project" was launched at the end of 2009. After a year and a half of hard work, researchers successfully completed a series of results including the genomic framework map, physical map, and high-density linkage map. The eel genome map published this time is based on the single gynogenesis of individuals of the most widely farmed carp species in China, and the high-quality data with a coverage of more than 100 times has been measured. The study found that the eel genome has 100 chromosomes, which is the largest number of chromosomes in the complete genome sequencing study. The eel genome size is about 1.7 billion base pairs, which is far greater than the fish genome that has been completely sequenced. China has abundant aquatic species. Why did the researchers choose salmon for gene research? It turns out that China is the country with the most abundant salmon germplasm and genomic resources in the world. Carangidae is also the most important aquaculture species in China, accounting for more than 70% of China's total freshwater aquaculture production. In addition, carp is still the most cultivated aquaculture species in China. Therefore, in the development of modern agricultural breeding technology characterized by the use of genomic resources to improve animal and plant economic traits, carp is China's most conditional use of genomic resources for species improvement. Aquaculture species. At present, the world's agriculture has entered the stage of molecular breeding based on genomic data. In the future, it will gradually move toward the era of food safety production and monitoring based on genomic knowledge. According to relevant experts, the advent of whole genome sequence maps of squid will enable people to fully grasp all the genes formed by the economic traits of squid, such as the genes that affect the quality of fish and affect the formation of intermuscular punctures, thereby obtaining good meat quality and less intermuscular puncture. The popular new salmon species; and the whole genome sequencing of salmon, are also of great value for the elucidation of evolution and species differentiation of carps. (Liu Huan) utility knife,box cutter knife,retractable utility knife,best folding utility knife Yucheng Shuangyan Hardware Plastic Factory , https://www.shuangyanhardware.com