DNA polymerases need a primer oligonucleotide (RNA or DNA) - their substrates are an existing 3'-OH group and a dNTP. The primase however is a typical RNA polymerase, capable of initiating polynucleotide synthesis de novo by positioning a complementary ribonucleoside 5'-triphosphate opposite its complementary DNA base.
Alison Schapker. Alison Schapker is an American television writer and producer. She is well known for her work on the ABC espionage series Alias and for the FOX science-fiction series Fringe.
In summer 2014, Schapker joined the DC Comics produced CW series The Flash, as a writer and consulting producer. Her first episode to contribute to was the series' third installment, Things You Can't Outrun, which she co-wrote with Grainne Godfree.