Ribonucleic acid polymerase activity in extended and contracted chromosomes.
D002875:Chromosomes / Q000378:metabolism*; D066298:In Vitro Techniques; D009713:Nucleotidyltransferases / Q000378:metabolism*; D012313:RNA / Q000096:biosynthesis*
D012313:RNA; D009713:Nucleotidyltransferases