Check if the recombinant DNA has been made correctly. This test is done by genetic probe method. Selectable marker of plasmid DNA is used in this process. Antibiotic resistance genes are inserted into the recombinant DNA. The host bacteria are then grown in culture medium. Bacteria into which the antibiotic resistance gene was inserted grew in the culture medium and formed colonies. From this, it can be understood that the work of making recombinant UghA has been done correctly.