A Brief Explanation of an Over-the-Counter Market | Definition. A over-the-counter market (OTC) refers to a decentralized and informal way of exchanging stocks, derivatives, or other assets between two parties.
The leading strand is built by using the lagging strand of the old molecule as the template. Replication of the leading strand begins with the enzyme âprimaseâ. Primase adds a small complementary piece of RNA (~10 nucleotides), called an âRNA primerâ, near the end of the lagging strand. The RNA primer gives an enzyme called âDNA polymerase IIIâ something to attach a DNA nucleotide to. A jury-rigged design, RNA primers are necessary because DNA polymerase III can only attach nucleotides to the 3â end of a pre-existing nucleotide.
The main enzymes involved in DNA replication are: Helicase: unwinds the double helix into two strands Polymerase: adds nucleotides to an existing strand Ligase: brings togeth â¦ er the Okazaki fragments Topoisomerase: cuts and rejoins the helix RNA primase: catalyzes the synthesis of RNA primers Hope this helps!