Part 1 Climate Change and Corresponding Efforts in China. Many observations in recent 100 years show that the earthâs climate is now. experiencing significant change characterized by global warming. And the trend of. climate change in China is generally consistent with that of global climate change.
Primase synthesizes the RNA primer that is used to start an Okazaki fragment on the lagging strand. DNA polymerase III continues to add nucleotides to the leading strand right at the replication fork. DNA polymerase I (not at the replication fork) replaces the RNA primers with DNA nucleotides. DNA ligase, also not at the replication fork fuses the new nucleotides produced by polymerase I with the adjacent strand. Replication continues until there are two completely seperate DNA strands that are identical.
DNA replication is the process by which DNA makes a copy of itself during cell division. 1  The first step in DNA replication is to âunzipâ the double helix structure of the DNA molecule. The primer acts as the starting point for DNA synthesis. 2  DNA polymerase binds to the leading strand and then âwalksâ along it, adding new complementary nucleotide bases (A, C, G and T) to the strand of DNA in the 5â to 3â direction. 3  This sort of replication is called continuous.