Abundant species of poly(A)-containing RNA from Saccharomyces cerevisiae

Hybridization experiments using uniformly labeled poly(A) RNA derived from Saccharomyces cerevisiae strains carrying the "killer character" showed that (1) these molecules appear to be transcribed from repetitive DNA sequences. (2) there are approximately 35 DNA template sequences that are transcribed into poly(A) RNA. It is concluded that under the RNA extraction procedure used, most of the poly (A) RNA represents killer-RNA as judged by the dependence of the kinetic complexity of poly(A) RNA on the genomic complexity of killer-RNA.