Isolation of genes

Isolation of Genes
During 1970s and 1980s, significant progress was made in the techniques for isolation of a variety of genes, including those for (i) ribosomal RNA; (ii) specific protein products; (iii) phenotypic traits with unknown gene product, and those for (iv) regulatory functions e.g. promoter genes, etc. Different techniques have been used for the isolation of these different types of genes and will be briefly described.