Fred Griffiths' Experiment Flashcards
1
Q
What they worked with?
A
- Worked with different strains of the bacterium Diplococcus pneumoniac
- Some virulent strains (cause diseases) others non-virulent
- Virulent - slimy capsule
2
Q
Injected virulent S-strain=
A
mice died
3
Q
Injected non-virulent R-strain=
A
Mice survived
4
Q
Killed some s-strain by heating them up…
A
Mice survived
5
Q
Mixed dead S-strain with living R-strain…
A
Mice died
6
Q
Capsule caused disease, injecting it alone =
A
•no affect
7
Q
Somehow dead S-strain had ‘transformed’ the R-strain into virulent S-strain…
A
No explanation
8
Q
Why did the mouse with heat killed S-strain mixed with R-strain die?
A
DNA from the S-strain renatured, went in the R strain and it reproduces the S-strain protein live
