Expression of SuURrs6.Scer\UAS under the control of Scer\GAL4AB1 does not result in the disappearance of weak points in the polytene chromosomes of salivary glands.
Expression of SuURrs6.Scer\UAS under the control of Scer\GAL4AB1 in a SuURES background results in larvae with numerous weak points in intercalary heterochromatin regions (this indicates rescue of the SuURES phenotype of lack of underreplication).