DNA Typing: Significance and Applications
The genetic material that holds human life in this world is Deoxyribo-Nucleic Acid (DNA). It is present mostly inside the nucleus of each cell in the living body. Each nucleus has a pack of chromosomes which in turn contain DNA. The DNA molecule occurs in two strands that wind around each other forming a double helical shape. Each strand holds a backbone made of alternating sugar (deoxyribose) and phosphate groups. To the alternating sugars, each of the four typical DNA bases such as adenine, guanine, cytosine, and thymine are attached. The two strands are held together by bonds between the bases; adenine bonds with thymine, and cytosine bonds with guanine. The sequence of the bases along the backbones serves as instructions for assembling protein and RNA molecules. It’s a polymer of four bases–A, C, T, and G–but it allows enormous complexity to be encoded by the pattern of those bases, […]