assays of the differential placement of the promoter-less drug resistance proteins ( encoded within the interrupted fla genes ) allow us to determine whether the positioning of the fla gene products is controlled by signal sequences in their proteins , by specific mrna-targeting sequences in the 5'-regulatory regions of these genes , or by specific transcription from only one of the two newly replicated chromosomes in the predivisional cell .
C0086860
less
C0007634
cell