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Molecular Genetics
         Understanding the Role of
         Molecules in Inheritance


Tuesday, March 9, 2010
Tuesday, March 9, 2010
Master Objectives:




Tuesday, March 9, 2010
Master Objectives:

          3.3.B.b	 Recognize that DNA codes for proteins,
              which are expressed as the heritable
              characteristics of an organism. (DOK: 1)




Tuesday, March 9, 2010
Master Objectives:

          3.3.B.b	 Recognize that DNA codes for proteins,
              which are expressed as the heritable
              characteristics of an organism. (DOK: 1)

          3.3.B.e	 Identify possible external causes (e.g.,
              heat, radiation, certain chemicals) and effects
              of DNA mutations (e.g., altered proteins
              which may affect chemical reactions and
              structural development). (DOK: 2)
Tuesday, March 9, 2010
Tuesday, March 9, 2010
DNA provides the CODE




Tuesday, March 9, 2010
DNA provides the CODE
             The sequence of nitrogen bases
         in DNA code for the building of protein




Tuesday, March 9, 2010
DNA provides the CODE
             The sequence of nitrogen bases
         in DNA code for the building of protein




Tuesday, March 9, 2010
DNA provides the CODE
             The sequence of nitrogen bases
         in DNA code for the building of protein

         The code (genes) are like a blueprint
         for constructing enzymes and cell
         parts

Tuesday, March 9, 2010
Each strand of DNA contains many
                 genes which each code for a
                         different protein product
Tuesday, March 9, 2010
Each strand of DNA contains many
                 genes which each code for a
                         different protein product
Tuesday, March 9, 2010
Protein is made by linking
                 AMINO ACIDS together




Tuesday, March 9, 2010
Protein is made by linking
                 AMINO ACIDS together




Tuesday, March 9, 2010
Every 3 bases in DNA codes
              for a specific amino acid




Tuesday, March 9, 2010
Every 3 bases in DNA codes
              for a specific amino acid




Tuesday, March 9, 2010
The sequence of amino acids
        gives the protein its properties




Tuesday, March 9, 2010
The sequence of amino acids
        gives the protein its properties




Tuesday, March 9, 2010
Structural proteins and
          enzymes are responsible
          for ALL of our inherited
          characteristics

Tuesday, March 9, 2010
Examples:




Tuesday, March 9, 2010
Examples:




            antibodies


Tuesday, March 9, 2010
Examples:       keratin




            antibodies


Tuesday, March 9, 2010
Examples:                    keratin

                         hemoglobin


            antibodies


Tuesday, March 9, 2010
Examples:                    keratin

                         hemoglobin
                                      actin and
                                      myosin
            antibodies


Tuesday, March 9, 2010
Examples:                       keratin

                         hemoglobin
                                          actin and
                                          myosin
            antibodies
                                      pepsin and
                                      trypsin
Tuesday, March 9, 2010
The Big Picture




Tuesday, March 9, 2010
The Big Picture
    Central Dogma




Tuesday, March 9, 2010
The Big Picture

                         Protein Synthesis
    Central Dogma




Tuesday, March 9, 2010
The Big Picture

                         Protein Synthesis
    Central Dogma




Tuesday, March 9, 2010
Tuesday, March 9, 2010
Tuesday, March 9, 2010
Mutations are changes
          in the DNA that alter
          protein synthesis.


Tuesday, March 9, 2010
All mutation requires is
                         a change in 1 base pair...




Tuesday, March 9, 2010
All mutation requires is
                         a change in 1 base pair...




                         Chemicals


Tuesday, March 9, 2010
All mutation requires is
                         a change in 1 base pair...




                         Chemicals

       UV Radiation
Tuesday, March 9, 2010
All mutation requires is
                         a change in 1 base pair...

        Nuclear Radiation

                         Chemicals

       UV Radiation
Tuesday, March 9, 2010
All mutation requires is
                         a change in 1 base pair...

        Nuclear Radiation
                                           Mistakes
                         Chemicals         by the Cell


       UV Radiation
Tuesday, March 9, 2010
All mutation requires is
                         a change in 1 base pair...

        Nuclear Radiation
                                           Mistakes
                         Chemicals         by the Cell


       UV Radiation                     Carcinogens
Tuesday, March 9, 2010
"DNA makes RNA and RNA makes
                    proteins and proteins make us."
                              ~Francis Crick




Tuesday, March 9, 2010

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Molecular Genetics

  • 1. Molecular Genetics Understanding the Role of Molecules in Inheritance Tuesday, March 9, 2010
  • 4. Master Objectives: 3.3.B.b Recognize that DNA codes for proteins, which are expressed as the heritable characteristics of an organism. (DOK: 1) Tuesday, March 9, 2010
  • 5. Master Objectives: 3.3.B.b Recognize that DNA codes for proteins, which are expressed as the heritable characteristics of an organism. (DOK: 1) 3.3.B.e Identify possible external causes (e.g., heat, radiation, certain chemicals) and effects of DNA mutations (e.g., altered proteins which may affect chemical reactions and structural development). (DOK: 2) Tuesday, March 9, 2010
  • 7. DNA provides the CODE Tuesday, March 9, 2010
  • 8. DNA provides the CODE The sequence of nitrogen bases in DNA code for the building of protein Tuesday, March 9, 2010
  • 9. DNA provides the CODE The sequence of nitrogen bases in DNA code for the building of protein Tuesday, March 9, 2010
  • 10. DNA provides the CODE The sequence of nitrogen bases in DNA code for the building of protein The code (genes) are like a blueprint for constructing enzymes and cell parts Tuesday, March 9, 2010
  • 11. Each strand of DNA contains many genes which each code for a different protein product Tuesday, March 9, 2010
  • 12. Each strand of DNA contains many genes which each code for a different protein product Tuesday, March 9, 2010
  • 13. Protein is made by linking AMINO ACIDS together Tuesday, March 9, 2010
  • 14. Protein is made by linking AMINO ACIDS together Tuesday, March 9, 2010
  • 15. Every 3 bases in DNA codes for a specific amino acid Tuesday, March 9, 2010
  • 16. Every 3 bases in DNA codes for a specific amino acid Tuesday, March 9, 2010
  • 17. The sequence of amino acids gives the protein its properties Tuesday, March 9, 2010
  • 18. The sequence of amino acids gives the protein its properties Tuesday, March 9, 2010
  • 19. Structural proteins and enzymes are responsible for ALL of our inherited characteristics Tuesday, March 9, 2010
  • 21. Examples: antibodies Tuesday, March 9, 2010
  • 22. Examples: keratin antibodies Tuesday, March 9, 2010
  • 23. Examples: keratin hemoglobin antibodies Tuesday, March 9, 2010
  • 24. Examples: keratin hemoglobin actin and myosin antibodies Tuesday, March 9, 2010
  • 25. Examples: keratin hemoglobin actin and myosin antibodies pepsin and trypsin Tuesday, March 9, 2010
  • 26. The Big Picture Tuesday, March 9, 2010
  • 27. The Big Picture Central Dogma Tuesday, March 9, 2010
  • 28. The Big Picture Protein Synthesis Central Dogma Tuesday, March 9, 2010
  • 29. The Big Picture Protein Synthesis Central Dogma Tuesday, March 9, 2010
  • 32. Mutations are changes in the DNA that alter protein synthesis. Tuesday, March 9, 2010
  • 33. All mutation requires is a change in 1 base pair... Tuesday, March 9, 2010
  • 34. All mutation requires is a change in 1 base pair... Chemicals Tuesday, March 9, 2010
  • 35. All mutation requires is a change in 1 base pair... Chemicals UV Radiation Tuesday, March 9, 2010
  • 36. All mutation requires is a change in 1 base pair... Nuclear Radiation Chemicals UV Radiation Tuesday, March 9, 2010
  • 37. All mutation requires is a change in 1 base pair... Nuclear Radiation Mistakes Chemicals by the Cell UV Radiation Tuesday, March 9, 2010
  • 38. All mutation requires is a change in 1 base pair... Nuclear Radiation Mistakes Chemicals by the Cell UV Radiation Carcinogens Tuesday, March 9, 2010
  • 39. "DNA makes RNA and RNA makes proteins and proteins make us." ~Francis Crick Tuesday, March 9, 2010