Nucleotides

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. one(a) 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 helix 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 some a central axis. A. alternating sugar and phosphate units B.

purine and pyrimidines paired up - A can only form atomic number 1 bonds with T - C can only for ?? ?? with G. ?? 2 strands that ar complemental to each other IV. Copying of DNA: A. getting even: work on of synthesizing a new strand of DNA. B. Helices: give 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 necessitate to get a full essay, order it on our website: OrderEssay.net

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