which of the following statements includes a reasonable refinement that researchers could use in repeating the experiment?responsesstart each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same.start each population with genetically identical bacterial cells from a single culture to make sure that the initial genetic variation in all of the populations was exactly the same.start each population with a different species of bacteria to determine whether the same environment has an effect on genetic differentiation.start each population with a different species of bacteria to determine whether the same environment has an effect on genetic differentiation.start each population with bacterial cells that have different genotypes to make sure there is enough genetic variation for selection to occur.start each population with bacterial cells that have different genotypes to make sure there is enough genetic variation for selection to occur.start each population with bacteria that differ from one another by a single mutation to ensure that the initial genetic variation in all populations is known.
