RNA primer in eukaryote is formed by -: (A) Ligase, (B) RNA polymerase, (C) Topoisomerase, (D) Helicase
Answer is B. Ans. is 'b' i.e., RNA polymeraseo DNA synthesis cannot commence with deoxyribonucleotides because DNA polymerase cannot add a mononucleotide to another mononucleotide.o Thus, DNA polymerase cannot initiate synthesis of complementary DNA synthesis strand of DNA on a totally single stranded template.o For this, they require RNA primer, which is a short piece of RNA formed by enzyme primase(RNA polymerase) using DNA as a template.o RNA primer is then extended by addition of deoxyribonucleotides.o Later on, the ribonucleotides of the primer are replaced by deoxy ribonucleotides.# Note : Primase is actually a DNA primase which has RNA polymerase activity. This DNA primase is also called DNA polymerase ce-