1 29 Dna Replication

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1 29 Dna Replication

  1. 2. <ul><li>B1- 95% </li></ul><ul><li>B2- 93% </li></ul><ul><li>B3- 98% </li></ul><ul><li>B5- 99% </li></ul><ul><li>You guys rocked it!!!! </li></ul>
  2. 3. <ul><li>No School, Monday </li></ul><ul><li>No quiz Tuesday </li></ul><ul><li>Quiz Wednesday </li></ul>
  3. 5. <ul><li>DNA is super compacted, forming chromosomes </li></ul>
  4. 7. <ul><li>Made of 3 billion base pairs </li></ul><ul><li>23,000 of these code for proteins </li></ul><ul><ul><li>We call these “ genes ” </li></ul></ul><ul><li>The rest of the genome is “ junk DNA ” </li></ul>
  5. 8. <ul><li>http://www.youtube.com/watch?v=N5zFOScowqo </li></ul>
  6. 9. <ul><li>Genes produce proteins </li></ul><ul><li>The order of nitrogen bases in DNA molecules regulate what types of proteins are produced. </li></ul>
  7. 10. DNA Replication is when DNA makes a copy of itself. When DNA replicates it produces two DNA molecules that are identical (exactly the same) as the original parent strand: Picture of DNA Replication: 1 DNA 2 DNA DNA Replication DNA Replication
  8. 11. <ul><li>Happens in the nucleus </li></ul>
  9. 12. <ul><li>http://www.youtube.com/watch?v=AGUuX4PGlCc&feature=related </li></ul>
  10. 13. <ul><li>Step 1: Hydrogen bonds break and DNA strands begin to unzip . </li></ul>
  11. 14. <ul><li>Step 2: Free floating nucleotides join the open DNA to form 2 new DNA molecules. </li></ul>
  12. 15. <ul><li>Step 3: There are 2 new molecules of DNA which are exact copies of each other. Each DNA molecule has one old strand and one new strand. </li></ul>
  13. 16. <ul><li>-Cells need DNA to make proteins they need to survive . </li></ul><ul><li>-DNA Replication allows a cell to pass down its genetic information to the next generation . </li></ul>

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