5.2 SG Flashcards
Define DNA replication
A process by which DNA is replicated and new strands of DNA are made from an old strand and a new strand
Why does DNA replication happen?
To grow, repair, and reproduce
How many types of Replication are there?
3: Conservative, semiconservative, and dispersive
Define conservative replication
Replication in which the copy is an exact copy and is the same
Define semiconservative replication
Strands made by combination of 2 different strands
Define dispersive replication
New strands of NDA made from bits and fragments of two different strands of DNA
What does the Helicase do?
It “unzips” the double helix, separating the 2 strands of DNA
What does the Primer do?
It places RNA primers on the strand of DNA so that the DNA polymerase knows where to work
What does the DNA polymerase 3 do?
It builds new strands of DNA by placing new Nucleotides and matching them to their appropriate nitrogenous base pair as well
From which end can the DNA polymerase work?
It can only add onto 3’ ends so it’ll start at the 5’ end towards the other
What does the Ligase do?
It seals the gaps made between the strands of DNA made by the Lagging line since it has to begin and cease the process multiple times
