Gene expression and Gene expression and regulationregulation基因功能基因功能学习语言记忆生老病死chromosomeGene:coding sequence：continous（bacteria）discontinous(eukaryotes):exon and intronnon-coding sequence:regulation or in the construction of chromosomeRNA splicingRNA splicingdiscovery of split gene；splicing during gene expressiondomainribozymeCech:catalytic RNA molecules Cuenoud(1995):catalytic DNA molecules origin of life:RNA?DNA?Gene expression sequencetimepositioncontrol elementsregulator elementsTATA boxGC b
