You combined dna of heat-killed cells of smooth (s) strain of streptococcus pneumoniae with live rough (r) strain cells of streptococcus pneumonia in a test tube and left it for a few hours. you then spread this mixture on a plate. what type of bacterial colonies would you expect to see?
a. only smooth cells
b. only rough cells
c. mostly rough cells and some smooth cells
d. mostly smooth cells and some rough cells
e. i do not expect to see any colonies
