RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.NA polymerases have been found in all species, but the number and composition of these proteins vary across taxa. For instance, bacteria contain a single type of RNA polymerase, while eukaryotes (multicellular organisms and yeasts) contain three distinct types.
1 A Federal Employees' Retirement System (FERS) employee (generally if you were hired on or after January 1, 1984), or.  A Civil Service Retirement System (CSRS) employee (generally if you were hired before January 1, 1984 and did not convert to FERS), or.
CSRS Information Eligibility. There are five categories of benefits under the Civil Service Retirement System (CSRS). Eligibility is based on your age and the number of years of creditable service and any other special requirements. In addition, you must have served in a position subject to CSRS coverage for one of the last two years before your retirement.