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PolynucleotideA polynucleotide molecule is an organic polymer molecule composed of nucleotide monomers covalently bonded in a chain. DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are examples of polynucleotides with distinct biological function. The prefix poly comes from the ancient Greek πολυς (polys, many). Additional recommended knowledgePolynucleotides in organismsPolynucleotides occur naturally in all living organisms. The genome of an organism consists of complementary pairs of enormously long polynucleotides wound around each other in the form of a double helix. Polynucleotides have a variety of other roles in organisms. Polynucleotides in scientific experimentsPolynucleotides are used in biochemical experiments such as polymerase chain reaction (PCR) or DNA sequencing. Polynucleotides are made artificially from oligonucleotides, smaller nucleotide chains with generally fewer than 30 subunits. An polymerase enzyme is used to extend the chain by adding nucleotides according to a pattern specified by the scientist. Categories: Genetics | Nucleotides |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Polynucleotide". A list of authors is available in Wikipedia. |