Describe each classical experiment and indicate how it provided evidence for the chemical nature of the gene. Discuss how recombinant DNA techniques may be used to correct a point mutation. Begin with the separation of the messenger RNA from the DNA template and end with the release of the protein at the plasma membrane. Include in your answer a discussion of how the different types of RNA function in this process. Select three of the following, and for each of the three that you have chosen, explain how the process of recognition occurs and give an example.
Organisms recognize others as members of their own species.
Antigens trigger antibody responses. Nucleic acids are complementary. The diagram below shows a segment of DNA with a total length of 4,900 base pairs. Describe the results you would expect from electrophoretic separation of fragments from the following treatments of the DNA segment above. Assume that the digestion occurred under appropriate conditions and went to completion.