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Nucleic Acid Replication English Version


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GCE A/L Genetics & Cellcycle

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Nucleic Acid Replication English Version

  1. 1. DNA REPLICATION of [email_address]
  2. 2. What is Replication?. <ul><li>In replication Two identical daughter DNA molecules are made from a single DNA molecule. </li></ul><ul><li>This is an uneque feature in DNA. </li></ul><ul><li>No other biological molecule do so. </li></ul>
  3. 3. Two coplementary polynecleotide strands are joined by hydrogen bonds To make a DNA molecule.
  4. 4. <ul><li>During replication the following steps are occurred. </li></ul><ul><li>DNA molecule unwind </li></ul><ul><li>The hydrogen bonds between complementary base pairs break </li></ul><ul><li>Two strands are separated from each other </li></ul><ul><li>Each single strand act as a template for a new complementary strand. </li></ul><ul><li>Complementary nucleotides are assembled alongside each strand. </li></ul><ul><li>Sugar-phosphate backbone is formed by phosphodiester bonds between adjacent nucleotides </li></ul><ul><li>Once this had occurred along the whole length of the each strand two identical molecules of DNA are formed. </li></ul>
  5. 5. Hydrogen bonds break Two strands separate 1 2
  6. 6. Complementary bases assemble alongside each strand
  7. 7. Each strand make their complementary strand
  8. 8. Two identical DNA molecules are formed
  9. 9. Let us animate the process of replication
  10. 11. H bonds break Two strands seperate
  11. 12. Sugar phosphate backbone is made by joining the adjcent nucleotides ( DNA polymarase enzyme ( ) ) Nucleotides with Complementary bases are assembled alongside each strands
  12. 13. Two identical DNA molecules are formed
  13. 14. THE END [email_address]