DNA structure

DNA structure - Principles of Biology DNA Structure and...

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Principles of Biology DNA Structure and Replication Nucleotide monomers o The monomers of nucleic acids are nucleotides composed of a sugar, phosphate, and nitrogenous base o The sugar and phosphate form the backbone for the nucleic acid or polynucleotide o DNA and RNA are polymers of nucleotides o DNA is a nucleic acid made of long chains of nucleotide monomers. o DNA and RNA are polymers of nucleotides o DNA has four kinds of nitrogenous bases: A, T, C, and G o DNA and RNA are polymers of nucleotides o RNA is also a nucleic acid, but has a slightly different sugar. o RNA uses U instead of T (the other 3 bases are same) o DNA is a double-stranded helix James Watson and Francis Crick worked out the three-dimensional structure of DNA, based on work by Rosalind Franklin. The structure of DNA consists of two polynucleotide strands wrapped around each other in a double helix. Double-stranded helix Hydrogen bonds between bases hold the strands together. Each base pairs with a complementary partner:
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This note was uploaded on 10/05/2011 for the course BIOL 1543 taught by Professor Roberts during the Spring '08 term at Arkansas.

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DNA structure - Principles of Biology DNA Structure and...

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