Most of us know that we have something called genes that determine our physical characteristics, which pass on to our children. Genes are pieces of a molecule called deoxyribonucleic acid (DNA). This molecule consists of two chains of alternating sugar and phosphate groups that coil around each other to form a double helix. These simple units line up in that double helix in a way that carries information much like the pages of a huge book. The DNA design carries much of the information that makes us who we are.
The complexity of the DNA molecule is astounding, and its size is even more so. If all the DNA molecules in your body were uncoiled and laid end-to-end, it would stretch from here to Pluto and back. Humans do not have the largest DNA molecules. A flowering plant native to Japan called Paris Japonica has a DNA molecule 50 times longer than human DNA.
DNA was discovered in 1869 by Swiss Biochemist Friedrich Miescher, who called it nuclein. In the early 1940s, bacteriologist Oswald Avery discovered DNA’s connection to genetics. James Watson and Francis Crick discovered the double-helix structure of DNA design in 1953.
Because the molecule is so large and complex, the opportunities to study it and make practical use of it are almost limitless. Scientists are using synthetic DNA to create vaccines. Some DNA vaccines have been successful in animals. At this time, some scientists around the world are working on COVID-19 vaccines using DNA.
Scientists are developing other uses for DNA coding. The Consortium for the Barcode of Life (CBOL) is working to establish barcodes to identify plant and animal species. The use of DNA has solved many criminal investigations. Modification of DNA has given us genetically modified foods.
There are two lessons we can learn from this. First, the complexity of DNA design boggles the mind. Suggesting that it is the product of random chance seems much less likely than the idea that an intelligence designed it. That leads us to the question of whether we are playing God in some DNA experiments. We have previously talked about genetically modified babies. The extreme complexity of DNA makes it much more likely for a human error, causing harm to others. Scientists working with DNA manipulation should be guided by reverence for the Creator and the life that He created.
— John N. Clayton © 2020