Final answer:
The question is asking about experiments conducted in strains that lack repair polymerase. This is related to the field of biology and specifically genetics.
Step-by-step explanation:
The question is asking about experiments conducted in strains that lack repair polymerase. This is related to the field of biology and specifically genetics. Repair polymerase is an enzyme involved in DNA repair mechanisms. When an experiment is conducted in strains that lack repair polymerase, it allows researchers to study the effects of lacking this enzyme on mutation rates and other genetic processes.