DNA holds the "language" of life from "summary" of The Language of God by Francis Collins
The genetic code that resides within every cell of our bodies is a remarkable system of information that determines our physical characteristics and governs the processes of life. This code is written in the language of DNA, a molecule composed of four chemical bases - adenine, thymine, guanine, and cytosine - that arrange themselves in a specific sequence to spell out the instructions for building and maintaining an organism. Just as letters of the alphabet can be combined to form words and sentences, the sequence of bases in DNA forms genes, which in turn encode proteins that carry out the myriad functions of living cells. These proteins are the molecular machines that perform tasks such as transporting oxygen in the blood, digesting food in the stomach, and enabling nerve cells to communicate with one another. The beauty of this system lies in its simplicity and elegance - a series of four chemical building blocks arranged in different combinations can generate an incredible diversity of biological structures and functions. ...
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