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Today,we are going to be talking about DNA replication. DNA replication is a very complex
process, because it involves several different enzymes and proteins. I hope that by looking
at this video, you will be able to understand the process of DNA replication better. DNA
carries information for making all of the cell's proteins. When cells divide, they must
make a complete and exact copy of the DNA to pass along to the next cell. DNA replication
is the process in which one DNA molecule is replicated to two identical DNA molecules,
so that all the genetic information in the parent cell can be passed onto the daughter
cell. Now, DNA replication is referred to as being semi-conservative, because when the
two strands of the double helix separates, each of the new DNA molecules has kept one
of the two original DNA strands, which are composed of a newly synthesized strand and
the parent strand. So, in this diagram, the top most picture is the original parental
DNA, and the red and blue strands added are the newly
synthesized strands. In Eukaryotes, DNA
replication is initiated
at
many
replication forks in the DNA.