This paper expounds the double helix structure and base pairing mode of DNA, and announces the formal discovery of DNA structure.

From 65438 to 0953, a paper in the British magazine Nature caused a sensation all over the world. The double helix structure and base pairing mode of DNA are expounded, and the formal discovery of DNA structure is announced.

The model of DNA double helix structure established by Watson and Crick not only clarified the structural characteristics of DNA molecules, but also revealed the transmission mode and high fidelity of genetic information in the process of DNA replication from parents to offspring, which laid the foundation for genetics to enter the molecular level and became the most brilliant milestone in the development history of modern molecular biology.

Extended data:

The genetic information of most organisms in nature is stored in the nucleotide sequence of DNA. DNA is a huge biopolymer, and the DNA contained in jujube chromosome, the carrier of intracellular genetic information, is generally called genome.

The genomic DNA content of the same species is always constant, but the size and complexity of genomes vary greatly among different species. Generally speaking, the higher the degree of evolution, the larger and more complex the genome composition of organisms.