Study Biology notes on Genetic Fingerprinting for A-Level. Useful for revision, homework, and exam preparation in Zimbabwe.
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This is the A-Level Biology notes. It is a free notes for revision.
Genefic fingerprinting (A2) the principle and method. Genetic fingerprinting is the mosthigh profile and widely used application of the electrophoresis of nucleic acid. DNA (deoxynibonucleic acid) is the biological macromolecule that is contained within the chromosomes of cells. It is a two-stranded polymer and each strand is composed of a sugar (deoxyribose)-phosphate backbone, with a cyclic organic base attached to each sugar residue. The strands are held together by hydrogen bonds between the organic bases and twine around each other in a helical fashion. structure of DNA. All DNA molecules contain the same molecular backbones, and the same four bases. They differ only in thein overall length (eventhe shortest has marry thousand units in its chain) and in the order in which the bases are arranged along the backbone.