experiments by avery-mccarty-macleod were consistent with the hypothesis that dna is the genetic material. however, at the time many scientists still didn't believe that dna was the genetic material for a variety of logical reasons. which one of the following was not cited as a reason to doubt that dna was the genetic material? question 7 options: the experiments were done with bacteria, and bacteria may be too simple to have genes. avery-macleod-mccarty couldn't conclusively prove that their dna was not contaminated with a tiny amount of protein. dna is made up of only 4 nucleotides and is too simple to encode complex traits. proteins are more complex and variable in size and structure than dna. thus, it seems more likely that proteins are the genetic material. frederick griffith had earlier shown conclusively that the genetic material in streptococcus pneumoniae was a complex carbohydrate capsule.
