Molecular cloning<span> is a set of experimental methods in </span>molecular biology that are used to assemble recombinant DNAmolecules and to direct their replication within host organisms.The use of the word cloning refers to the fact that the method involves the replication of one molecule to produce a population of cells with identical DNA molecules. Molecular cloning generally uses DNA sequences from two different organisms: the species that is the source of the DNA to be cloned, and the species that will serve as the living host<span> for replication of the recombinant DNA. Molecular cloning methods are central to many contemporary areas of modern biology and medicine.
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The chemical formula would be CTGA or any of the combinations of the four nitrogenous bases The nucleotide is made up of four bases which makes it a tetranucleotide and the arrangement of each bases create a linear geometry.
because it formed by a chemical process of fermentation. moreover, a chemical change is a change that can't be reversed. This process can't be reversed as well so it's a chemical change