This is leading to problems, however, as people plant inappropriate trees due to a false notion of what native means, good well-adapted trees that are non-native get overlooked, and homes built in existing native landscapes are subjected to dangerous fires.he concept and practice of using native trees in home and business landscapes in our region has some problems. By definition, a native plant is one that is living, growing, and reproducing naturally in a particular region. The key idea here is how we define a region.
The lagging strand replicates in small segments, called Okazaki fragments. These fragments are stretches of 100 to 200 nucleotides in humans (1000 to 2000 in bacteria) that are synthesized in the 5' to 3' direction away from the replication fork.
Copying occurs at a localized region called the replication fork, which is a Y shaped structure where new DNA strands are synthesised by a multi-enzyme complex. Here the DNA to be copied enters the complex from the left.One new strand is leaving at the top of frame and the other new strand is leaving at bottom.The first step in DNA replication is the separation of the two strands by an enzyme called helicase.he other half of the DNA double helix, known as the lagging strand, has the opposite 3' to 5' orientation and consequently requires a more complicated copying mechanism. As it emerges from the helicase, the lagging strand is organised into sections called Okazaki fragments.