It's hard to pick a starting point on where to begin in explaining our disdain for gender-reveal parties, but the name itself seems like a good one, in the fact that it's a complete misnomer. You are not revealing the gender of your baby; you are revealing the sex.
DNA Polymerase is a polymerase that synthesizes a DNA strand ... so it's used in DNA replication. RNA Polymerase is not used to form the primer-that is primases job. RNA Pol is used during transcription to synthesize the mRNA strand. EK does a decent job describing a primer.
RNA polymerase vs DNA polymerase. -like DNA polymerase the core enzyme builds 5-3 direction by catalyzing the formation of phosphodiester bonds at the free 3' ends-unlike DNA polymerase it can start the building process. the nucleotide sequence of the DNA template determines the sequence of bases.