DNA is usually a double-helix and has tantalize strands running in resister directions. for each adept train is made of subunits called nucleotides. separately strand has a grit made up of deoxy-ribose bread pinchs (5 sugars) linked unneurotic by phosphate groups. Each sugar molecule is covalently linked to one of quaternary possible bases, Adenine, Guanine, one C and Thymine. A and G nuclear number 18 sizeable molecules (called purines) and C and T be smaller molecules (called pyrimidines). In the DNA, the deuce strands run in glacial directions and the bases agree up so that A always matchs with T and G always equalizes with C. The A-T pair has 2 hydrogen bonds and the G-C pair has 3 hydrogen bonds. The G-C interaction is therefore stronger (by about 30%) than A-T. DNA REPLICATION DNA replicates, sideline the process of semiconservative replication. Each strand of the original molecule is separated and complemented with a tender as a jaybird strand to bond with The 2 strands of the double helix argon first separated by the enzyme helicase, which attaches to the molecule and untwists and separates it. With the assistance of enzyme polymerase, bargon(a) nucleotides visible(prenominal) inside the cell argon bound to the one-on-one strands following the rules of complementary base union: adenine (A) to deoxythymidine monophosphate (T) and g-force (G) to cytosine (C).
Two strands of DNA are obtained from one, having produced two fille molecules which are identical to one another(prenominal) and to the parent molecule. BIBLIOGRAPHY http://www.pbs.org/wgbh/aso/databank/entries/do53dn.html http://www.accessexcellence.org/AB/BC/Rosalind_Franklin.html http://www.pbs.org/wgbh/aso/databank/entries/bofran.html http://www.pbs.org/wgbh/aso/databank/entries/bofran.html http://www.accessexcellence.org/AB/GG/dna_replicating.html If you want to outsmart a integral essay, secern it on our website:
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