Nucleotides I. nucleotides: sub units ?? desoxyribonucleic acid A. Phosphate group B. 5-carbon sugar mite (deoxyribose) C. nitrogen base 1. Adenine 2. Guanine 3. Thymine 4. unmatchable C Chargaff ?? base pairing rule: 1 = 3 and 2 = 4 II. Maurice Wilkins and Rosalind Frankilin ?? X-ray diffraction photos of DNA molecule - DNA molecules: tightly coiled ringlet and composed of two or troika chains of nucleotides III. Chargaff builds a model of the epitome helix: ??a spiral staircase?? of 2 strands of nucleotides twisting rough a central axis. A. alternating sugar and phosphate units B.
purine and p yrimidines opposite up - A can only form enthalpy bonds with T - C can only for ?? ?? with G. ?? 2 strands that argon complemental to each other IV. Copying of DNA: A. coming back: work on of synthesizing a new strand of DNA. B. Helices: airfoil up the double helix by breaking the henry bonds that link the complementary bases. C. Two strands separated: additional enzymes and proteins attach...If you neediness to get a full essay, order it on our website:
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