Enzymes that Identify Mistakes
Due to external factors, mistakes occasionally arise in the DNA, the body's information bank. But these mistakes are fixed immediately by a control mechanism or repair process, effected by enzymes that are synthesized according to information found in the DNA itself.
The repair process is made up of a number of steps:
1. An enzyme called DNA nuclease identifies the damaged portion of the DNA strand.
2. DNA nuclease removes the identified faulty portion, creating a gap in the strand.
3. Another enzyme called DNA polymerase identifies the correct information from the undamaged strand of DNA, then repairs the damaged strand according to this undamaged model.
4. The repair process does not end here, however. A gap has been left in the sugar phosphate "backbone" in the area where the repair has taken place, but an enzyme called DNA ligase fills in this gap.
As you can understand from the functions they carry out, the enzymes that repair the DNA possess many multiple functions. In order to repair DNA, they must be very familiar with it. Moreover they must know where to get the correct information, and how to fill the gap that results.
The most amazing part is that the synthesis of DNA and the enzymes controlling its synthesis are all produced according to information stored within that same DNA, and are under the control of proteins made by that DNA. It is impossible for this magnificent system, with processes occurring within processes, to have come about in stages, by coincidence. In order for the enzymes to exist, DNA must exist to begin with; and in order for DNA to exist, the enzymes need to exist! But in order for them both to exist, the cell and the membrane and all of the other complex organelles must be in existence as well.
The theory of evolution that claims that living things came about gradually, as a result of "beneficial coincidences," is denied conclusively by the DNA-enzyme paradox, because DNA and its enzymes need to be in existence at the same time. This shows the evidence of a conscious creation.
1. During DNA synthesis, the DNA nuclease enzyme individually checks each paired strand for mistakes.
4. Using this proper component, DNA polymerase then fills in the gap.