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 2003, Schapker joined the espionage-action series Alias in its third season as an executive story editor and writer. 1  At the beginning of season four, she was promoted to producer, and by the final season, she had been named supervising producer. During her three-season span, Schapker co-wrote twelve episodes total.