History of DNA- Unit 4 Flashcards
1
Q
What types of bacteria did Griffith find in his experiment?
A
Smooth colonies (deadly) and rough colonies (not deadly)
2
Q
What does heating smooth colonies do?
A
Heating smooth colonies denatures them, making them harmless.
3
Q
What happens when heat-killed S-type and rough colonies are mixed?
A
The bacteria “transformed” itself from the heated non-deadly type to the deadly type. Live S-type was found.
4
Q
What was the conclusion of Griffith’s experiment?
A
A “transforming principle” was transferred from the heat-killed S bacteria to the R bacteria.
5
Q
What was the conclusion of Avery, McCarty, and McCleod’s expirement?
A
DNA is the transforming principle.
