Ring panyelehan puniki, "nincapang kebugaran" manut kadi ulangan varian mangda prasida medal raris sané varian anyar sané prasida maurip ring wewidangan ring genah selanturnyané ring ubad sané negehang kahanannyané .
In this experiment, "improvement in fitness" depends on the number of replications of the particular variant for a new variant to appear that is capable of growing in the next higher drug concentration region.