.
griffith realized that some genteic factor was being transfered from the heat-killed smooth bacteria to the
living through bacteria.
avery followed up griffith's work to material was.
experiment : avery made an extract from the heat killed bacteria and subjected samples of it to enzymes
that would break down carbs, lipids or proteins.

mixed each sample with living rough bacteria and injected one type of sample into each group of mice.
all of the mice died.
conclusion:transformation had occured and the genetic material is not composed of carbs , or proteins.
experiment@2:
averysubjected the extra to enzymes that broke down dna.
he mixed this sample with living rough bacteria and injected it into the mice . the mice lived.
dna could carry information.
dna could replicate easlily.
dna could code for specific traits.