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DNA Introduction

DNA Introduction. What is DNA?. Genetic information of life Type of Nucleic Acid Double Stranded . What is each made of?. THINK OF DNA AS BEING A LADDER Sides of the DNA molecule Phosphate group and sugar (deoxyribose) Rungs of DNA molecule Nitrogen bases. Shape and Who Proposed It.

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DNA Introduction

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  1. DNA Introduction

  2. What is DNA? • Genetic information of life • Type of Nucleic Acid • Double Stranded

  3. What is each made of? THINK OF DNA AS BEING A LADDER • Sides of the DNA molecule • Phosphate group and sugar (deoxyribose) • Rungs of DNA molecule • Nitrogen bases

  4. Shape and Who Proposed It • Twisted double strand = DOUBLE HELIX • James Watson and Francis Crick

  5. Components • Nucleotides make up a DNA molecule • Nucleotides are made of three parts • Phosphate group • Sugar group (Deoxyribose) • Nitrogen base

  6. Whats What?

  7. Types of Nitrogen Bases in DNA • Purine Bases (made of 2 rings) • Adenine (A) • Guanine (G) • Pyrimidine Bases (made of one ring) • Cytosine (C) • Thymine (T) ONLY FOUND IN DNA • Uracil (U) ONLY FOUND IN RNA

  8. Pairing of Nitrogen Bases (forms rungs of ladder) In DNA Strand • A bonds with T • G bonds with C • BONDED BY HYDROGEN BONDS

  9. RNA and DNA

  10. YOUR MODEL

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