DNA#1
Storyboard Text
- HELLO, my name is Frederick Griffith
- There are 2 forms of this bacteriumpathogenic strainnon-pathogenic strain
- I am to develop a vaccine for pneumonia. Which is caused by a bacteria Streptococcus pneumoniae
- 1928
- A live form of the pathogenic strain
- 1
- A non-pathogenic strain
- 2
- My experiment will be done with mice.
- Heat killed pathogenic strain(bacteria)
- Here is what I will inject into each of them
- 3
- Heat killed pathogenic strain
- 4
- +
- Live non-pathogenic strain
- As expected Mice #1 died and Mice #2 lived. Mice #3 which had the pathogenic strain that I killed using heat, indeed did live and suffered no effects.
- 1
- I was shocked at the results of Mice #4. I had injected a mix of the heat killed pathogenic bacteria with the live non-pathogenic bacteria. I had thought the mice would live because the pathogenic strain is dead BUT Mice #4 is dead.
- x
- 2
- 3
- x
- 4
- TRANSFORMATION
- I propose that one of the chemicals in the heat that was used to kill the pathogenic strain altered the live non-pathogenic strain. This caused it to be deadly.
- I called this phenomenon of passing on genetic material transformation!
- We will continue the work of Frederick Griffith and determine the the isolating agent behind the transforming principle
- Avery
- MacLeod
- Mid 1940's
- is it DNA or protein?
- McCarty
- We will reproduce Griffith experiment. But, have one important difference
- 1
- 2
- 3
- 4
- Mice #5 we will treat the bacteria with a protein destroying enzyme
- Mice #6 the bacteria will be treated with a DNA-destroying enzyme
- 5
- 6
Over 30 Million Storyboards Created
No Downloads, No Credit Card, and No Login Needed to Try!
