Multiple choice Polymerase chain reaction (PCR) based markers were developed to ______. differentiate between different biotypes of gall midge manufacture antibiotics create termination codon obtain soil micro-organisms with the help of reductase enzyme Reveal answer Fill a bubble to check yourself A Correct answer Explanation PCR-based markers are used in molecular biology to identify genetic variations. They are specifically useful for distinguishing between different biotypes of organisms like the gall midge.