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.
Creditable service under FERS usually includes. 1  Federal covered service, that is, service in which the individual's pay is subject to FERS retirement deductions, such as service under a career or career conditional appointment, Unused Sick Leave under FERS can be used to increase an individualâs total creditable service for annuity computation purposes only; Federal service performed before 1989, where an employee's pay is not subject to retirement deductions, such as, service under a temporary appointment, as long as a deposit is paid. There are a few exceptions to the rule that the service must have been performed before 1989.