DNA AND PROTEIN SYNTHESIS

DNA AND PROTEIN SYNTHESIS - DNA AND PROTEIN SYNTHESIS * DNA...

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Unformatted text preview: DNA AND PROTEIN SYNTHESIS * DNA (deoxyribonucleic acid) - the compound that contains genetic information; the correct "double helix" structure of DNA was successfully sequenced by James Watson and Francis Crick in 1953. Rosalind Franklin contributed x-ray crystallography pictures of DNA. Erwin Chargaff determined the nucleotide base pairing sequences (adenine (A) to thymine (T); and guanine (G) to cytosine (C). Structure of DNA - DNA is a double helix composed of long chains of nucleotides; each nucleotide consists of a (1) phosphate, (2) sugar (deoxyribose), and nitrogenous base (adenine, guanine, cytosine, or thymine). If you straighten the DNA double helix and view the molecule as a long ladder; then the phosphates and the sugars form the sides of the ladder, and the paired bases (A-T or G-C) form the rungs of the ladder. DNA can make an exact copy of itself during a process known as replication; or the genetic code...
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This note was uploaded on 11/18/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.

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