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A replication fork is the mechanism by which a strand of DNA is synthesized. If you can imagine a strand of DNA unwound, then it would resemble a ladder. Unzip the DNA and it now looks like a fork, ie fork in road, not eating fork. There is a Leading strand, which is synthesised easily. USing DNA polymerase which 'reads' along the strand in the 3' to 5' direction on the strand, producing a replication strand in the 5' to 3' direction. The opposite strand is called the lagging strand, and this is slightly more complicated. DNA polymerase cannot read in the 5' to 3' direction on the template strand. Thus DNA primase is used to read the strand and replicate small RNA segments, called Okazaki fragments. The lagging strand has no been copied into many small strands of RNA, or Okazaki fragments. Next DNA polymerase comes along and replaces all the RNA nucleotides with DNA nucleotides. ANd finally DNA ligase 'stitches' all the small fragments into one long strand.
Wiki User
∙ 12y ago
Wiki User
∙ 7y agoEach and every base must be exactly copied so that each gene will be copied. These different places that you mention are the genes and areas in between them. Any mistake can cause a mutation that can be bad. Some are not but the way that this is done is so that there will be no mistakes (mutations).
Wiki User
∙ 12y agoBecause it holds the two separated strands of DNA apart preventing them from assuming their double helic shape.
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What is The action of helicase creates?
Replication Forks & Replication Bubbles
Do replication forks speed up replication?
Multiple replication forks working in concert, can be replicated in about 8 hours
Compare the number of replication forks in prokaryotic and eukaryotic DNA during replication?
Prokaryotic DNA is reproduced with DNA Polymerases replication forks.
What are the areas on DNA where replication occurs called?
DNA replication begins in areas of DNA molecules are called origins of replication.
Replication forks tend to?
two new strands of DNA jus guessing!!!
What is The action of helicase creates?
Replication Forks & Replication Bubbles
During DNA replication why are there many replication forks?
because it just is
Do replication forks speed up replication?
Multiple replication forks working in concert, can be replicated in about 8 hours
Compare the number of replication forks in prokaryotic and eukaryotic DNA during replication?
Prokaryotic DNA is reproduced with DNA Polymerases replication forks.
How many replication forks are produced when DNA denatures at an origin?
2
Do DNA have 1 or many replication forks?
Not sure, but good question! You may have to ask a doctor.
What are the areas on DNA where replication occurs called?
DNA replication begins in areas of DNA molecules are called origins of replication.
What does the replication fork do in DNA replication?
Replication forks hold the two separated strands of DNA apart preventing them from assuming their double helic shape.
What sites separate and replicate in DNA?
replication forks separate and replicate DNA
Replication forks tend to?
two new strands of DNA jus guessing!!!
Differentiate the number of replication forks in prokaryotic and eukaryotic DNA?
Read
Is it true formation of multiple replication forks tends to slow down DNA replication?
No, the whole point in forming multiple replication forks is to reduce the time it takes to replicated DNA by replicating several sections of DNA at the same time, so that each polymerase enzyme has to copy less of the DNA. As a result replication finishes earlier than it would if one polymerase were to replicate the entire strand (as it would operate at the same speed - about 1000 base pairs per second). The human genome has about 20,000 origins for replication, which will produce 20,000 replication forks. It is necessary to have this many because the human genome is so large (3.3 billion base pairs). Without 20,000 origins, DNA replication would take close to 20,000 times longer.
