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National Biology

National Biology. DNA and the Structure of Proteins Section a: What is DNA?. Recap. On white boards write down what you can remember from S1/2 or your own general knowledge about genetics and inheritance. What are we learning today?. We are learning to: State what DNA is

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National Biology

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  1. National Biology DNA and the Structure of Proteins Section a: What is DNA?

  2. Recap • On white boards write down what you can remember from S1/2 or your own general knowledge about genetics and inheritance

  3. What are we learning today? We are learning to: • State what DNA is • Describe the structure of DNA • The purpose of DNA Success Criteria: • Double helix • Number of bases • Names of bases • Genetic code

  4. What is DNA? • DNA clip • What is DNA?

  5. What is DNA? • DNA stands for Deoxyribonucleic acid • DNA is found in a cells nucleus • DNA is packaged in chromosomes • Chromosomes have areas on them that code for protein – these areas are called genes

  6. What is the structure of DNA? Double stranded (double helix) Sugar phosphate backbone 4 bases Adenine – A Thymine – T Guanine – G Cytosine - C

  7. Sugar phosphate backbone

  8. 4 bases Adenine – A Thymine – T Cytosine - C Guanine – G

  9. The 4 Bases • The 4 bases bond in a complimentary way • Adenine always with thymine (A-T) • Guanine always with cytosine (G-C)

  10. Activity • Build your own molecule of DNA • Follow the instructions carefully • For Teachers - Origami DNA video instructions • If time you may get the opportunity to play the pairing game • DNA - The Double Helix

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