Polymerase is a(n) used in the process of dna analysis for fragment amplification.
a.) repeating sequence
b.) enzyme
c.) gene
d.) allele

A polymerase is an enzyme (EC 2.7.7.6/7/19/48/49) that synthesizes long chains of polymers or nucleic acids. DNA polymerase and RNA polymerase are used to assemble DNA and RNA molecules, respectively, by copying a DNA template strand using base-pairing interactions or RNA by half ladder replication.

this protocol describes a detailed procedure for intracellular flow cytometry staining.