Did the presence of streptomycin in the gradient plates cause the bacteria to generate new genes for resistance?

3. A bacterial colony represents all the progeny of a single cell. We refer to a colony as a clone, because bacteria reproduce asexually so all of the daughter cells should be genetically identical. However, some bacteria that were sensitive to the antibiotic at the beginning of the experiment were resistant by the end. What naturally occurring event led to resistance? (Hint: We are working with pure cultures of laboratory strains, so there are no superbugs around sharing their genes for resistance.) 4. Did the presence of streptomycin in the gradient plates cause the bacteria to generate new genes for resistance? (circle your answer) No Yes Why or why not?