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Composition of the DNA

Composition of the DNA. DNA Is Composed of Four Nucleotides. In 1940, biochemist E. Chargaff determined that : In a DNA molecule, amounts of A = T, G = C “ Chargaff’s Rule ”. DNA is a Double Helix. REMEBER: DNA is composed on nucleotides

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Composition of the DNA

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  1. Composition of the DNA

  2. DNA Is Composed of Four Nucleotides In 1940, biochemist E. Chargaff determinedthat: • In a DNA molecule, amounts of A = T, G = C “Chargaff’s Rule”

  3. DNA is a DoubleHelix • REMEBER: • DNA iscomposedon nucleotides • Each nucleotides has three components: • Phosphate group • Deoxyribose sugar • Nitrogenous base • Thymine • Guanine • Cytosine • Adenine

  4. SIMPLIFIED CHEMICAL STRUCTURE OF THE DNA Nucleotide Phosphoric acid Nitrogenous Base Deoxyribosesugar

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