1. Analysis shows that the whole human genome is about 2.9 1Gbp, with about 39,000 genes. The average gene size is 27kbp；; Among them, the content of G+C is low, accounting for only 38%, while the content of G+C on chromosome 2 is the highest. So far, 9% of the base pair sequences have not been determined. Chromosome 19 contains the most genes, while chromosome 13 contains the least genes, and so on. (See cmbi Special Report: Significant Progress in Life Sciences for details).

2. At present, more than 26,000 functional genes have been found and located, 42% of which are unknown. Among the known genes, enzymes account for 10.28%, nucleases for 7.5%, signal transduction for 12.2%, transcription factors for 6.0%, signal molecules for10.2%, and receptor molecules for 5%. It is of great significance to discover and understand the functions of these functional genes for gene function and new drug screening.