Question: What RNA eukaryotic polymerase is involved in the transcription of messenger RNA (mRNA) ?: 
 Options:  <1> RNA Polymerase I. <2> RNA Polymerase II. <3> RNA Polymerase III. <4> RNA Polymerase IV. <5> Transcription of mRNA is carried out jointly by RNA Polymerase I and RNA Polymerase II.
2