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.
But now cast member Alison Arngrim is lifting the lid on the more sensational details of life behind the scenes of the U.S. TV series. In new memoir Confessions Of A Prairie Bitch: How I Survived Nellie Oleson And Learned To Love Being Hated, she reveals she was the victim of child abuse at the hands of a family member. SCROLL DOWN TO WATCH VIDEO. Paririe confession: TV star Alison Arngrim launches her revealing memoirin New York last night.