Unformatted text preview: when they are needed to do its job. The other DNA parts actually tell the body which cells to make, but even this job is done by another cell which splits, separates and turns into organs. 3. How could just four different bases in DNA strands be responsible for the almost endless variety found in nature? A. The DNA has four bases, represented by the letters A, T, C and G; the initials are of the chemical names for those bases. They are arranged in groups of three, each group being called a codon. So ATA is one codon, CGT is another. Even with only four letters, you can get many codons and that can make very complicated instructions. Pruitt, Nancy & Underwood, L. (2005). Bioinquiry: Making Connections in Biology (3rd Ed.). Wiley...
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- Spring '09
- DNA, Pruitt, ATA, single DNA strand, Nancy & Underwood