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.
Miriam Schapiro is a Canadian-American artist and a leading figure in the feminist art movement. Often tied to the 1970s era Pattern and Decoration movement, Schapiro began her career working alongside second-generation Abstract Expressionists in New York, followed by forays into hard-edge painting.