Question

(a) In an experiment Griffith introduced heat-killed S-strain bacteria Streptococcus into a mouse along with live R-strain bacteria. The mouse died but the scientist recovered living S-strain bacteria from the dead mouse. Explain the conclusion Griffith arrived at after the experiment.
(b) Explain MacLeod, McCarty and Averys work that followed Griffith's experiment. State the conclusion they arrived at.

Answer 1

After the experiment, Griffith arrived at the conclusion that the R strain bacteria take up something from the environment which converts them into the S strain bacteria. this causes a violent nature in the bacteria. Giffith thus discovered Transformation.

MacLeod, McCarty and Avery came to the conclusion and after a series of tests following Griffith they found that the genetic material is the DNA.