A brief history of the discovery of nucleic acid is given. Specificity of DNA synthesis is amazing and the sequence of amino acids in proteins as a result of DNA coding is most precise. Rather than being the master chemical, DNA is the servant of the cell. Thus its operation is repressed by the cell until needed. Reasons for not being carried away by false hope of altering genes controlling our own body and mental traits are given, most important of which is lack of specificity of any irradiation or chemical mutagen. These all tend to be random in their effect. Thus we cannot “tell” a nitrite ion which of about 2500 adenine bases it should change to guanine. As we continue to learn more of the complexity of the DNA-RNA system we should be ever more impressed by Psalm 139:14, "Man is fearfully and wonderfully made.” Surely such a complexly integrated system could only have been created by a wisdom far superior to our own. Unbelieving man, willfully stubborn, prefers to believe this marvelous system could have evolved from properties inherent in the neutron. How much more reasonable to accept the clear proclamation "In the beginning God created . . ."