This very principle is used in laboratories to determine what changes in which codes of DNA can bring about what kinds of changes in the proteins. For this purpose, recombinant DNA strands are artificially made by applying heat and chemical reactions. These DNA strands are then introduced in the cellular nuclei of bacterial subjects like e-coli.the condition is that the bacterial cells should have the property of quick multiplication. The DNA undergoes transcription in the nucleus of the bacterial cells, and as the cells multiple, the proteins so produced, also multiple.
A brief introduction to recombinant proteins - Article Submission Services
