Genetic Engineering
How are changes made to DNA? <ul><li>genetic engineering:  the process of making changes in the genetic material (DNA) of ...
Recombinant DNA <ul><li>Taking a piece of one DNA and combining it with another strand of DNA </li></ul><ul><li>The DNA is...
Recombinant DNA Uses <ul><li>Improve food supply </li></ul><ul><li>Produce crops resistant to insect damage </li></ul><ul>...
Steps in Recombinant DNA Buckley, Jim. Online Images.  Mr. Buckley’s Living Environment . 13 May 2007.    http://www.ekcsk...
Gel electrophoresis:  used to separate DNA fragments  <ul><li>1. Restriction enzymes cut DNA </li></ul><ul><li>2. The cut ...
DNA Fingerprinting <ul><li>DNA fingerprinting:  DNA can be used like fingerprints to identify a person  </li></ul><ul><li>...
Who is the criminal??? The DNA from the scene matches Dino Online Images.  Access Excellence.  13 May 2007.    http://www....
Cloning <ul><li>Clone-genetically identical copies of an organism </li></ul><ul><li>http://www.sciencecases.org/dog_clonin...
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Module 11, lesson 1

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Module 11, lesson 1

  1. 1. Genetic Engineering
  2. 2. How are changes made to DNA? <ul><li>genetic engineering: the process of making changes in the genetic material (DNA) of an organism to change the characteristics of the organism </li></ul>Under a black light, this rabbit’s fur glows green. DNA from a jellyfish was inserted into the rabbit’s DNA to make her glow. This rabbit is called a transgenic organism because it has been modified. Muskopf, Shannan. Online Images. The Biology Corner . 13 May 2007. http://www.biologycorner.com/bio4/notes/recombinant.html
  3. 3. Recombinant DNA <ul><li>Taking a piece of one DNA and combining it with another strand of DNA </li></ul><ul><li>The DNA is from 2 different organisms </li></ul>
  4. 4. Recombinant DNA Uses <ul><li>Improve food supply </li></ul><ul><li>Produce crops resistant to insect damage </li></ul><ul><li>Source of human proteins </li></ul><ul><ul><li>Insulin and human growth hormone </li></ul></ul>
  5. 5. Steps in Recombinant DNA Buckley, Jim. Online Images. Mr. Buckley’s Living Environment . 13 May 2007. http://www.ekcsk12.org/science/regbio/moleculargeneticsqz.html <ul><li>Restriction enzymes are used to cut DNA at very specific sites. The animal cell’s DNA is cut out. </li></ul><ul><li>2. The same restriction enzyme is used to cut out the Bacterial cell’s DNA. </li></ul>3. Recombine the animal DNA with the bacterial DNA. 4. The recombinant DNA is placed in a bacterial cell because bacteria reproduce very quickly and are easy to grow. This will produce a lot of the animal’s DNA. This technique is used to make genetically engineered insulin. 1 4 3 2
  6. 6. Gel electrophoresis: used to separate DNA fragments <ul><li>1. Restriction enzymes cut DNA </li></ul><ul><li>2. The cut DNA is placed in a gel </li></ul><ul><li>3. An electric voltage moves the DNA fragments across the gel </li></ul><ul><li>The smaller pieces of DNA travel the fastest </li></ul>http://www.biologyreference.com/images/biol_02_img0140.jpg
  7. 7. DNA Fingerprinting <ul><li>DNA fingerprinting: DNA can be used like fingerprints to identify a person </li></ul><ul><li>Used to identify criminal suspects by making a DNA fingerprint of the blood, hair, or skin cells left at a crime scene </li></ul><ul><li>Used in paternity tests </li></ul>
  8. 8. Who is the criminal??? The DNA from the scene matches Dino Online Images. Access Excellence. 13 May 2007. http://www.accessexcellence.org/AE/AEPC/WWC/1994/fly_forensics.html
  9. 9. Cloning <ul><li>Clone-genetically identical copies of an organism </li></ul><ul><li>http://www.sciencecases.org/dog_cloning/cloning.gif </li></ul>

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