Asked By: Caroline WangUpdated: 4th April 2021

What happens if DNA does not replicate?

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Since the cell is dividing it needs two copies of its DNA - one is kept by the parent cell and the other is passed to the daughter cell. If cells don't replicate their DNA or don't do it completely, the daughter cell will end up with no DNA or only part of the DNA. This cell will likely die.

People also ask, why is it so important for DNA replication to be done accurately?

If the DNA is not accurately replicated, the changes could lead to non-functional proteins. This could lead to cell death, or if the protein was responsible for controlling cell division it could lead to cancer. Replication of DNA should occur reliably because its the main process needed for a cell to divide.

Additionally, what triggers DNA replication?

The initiation of DNA replication occurs in two steps. First, a so-called initiator protein unwinds a short stretch of the DNA double helix. Then, a protein known as helicase attaches to and breaks apart the hydrogen bonds between the bases on the DNA strands, thereby pulling apart the two strands.

Why must DNA replicate before a cell divides?

Explanation: DNA replication needs to occur because existing cells divide to produce new cells. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!

What happens when DNA replicates?

Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell. To accomplish this, each strand of existing DNA acts as a template for replication.

What happens if mutations are not corrected?

Mutations can occur during DNA replication if errors are made and not corrected in time. However, mutation can also disrupt normal gene activity and cause diseases, like cancer. Cancer is the most common human genetic disease; it is caused by mutations occurring in a number of growth-controlling genes.

Which enzyme is responsible for unzipping the DNA double helix?

DNA helicase

What actually happens to DNA before or as it is replicated copied?

Question: Question 1 2 Pts What Actually Happens To DNA Before Or As It Is Replicated/copied? It Must Unwind And Be Copied First Enzymes Attach To The DNA And Unwind The Molecule And Nucleotides Pair Up, A With T And G With C Enzymes Attach To The DNA And Cut It Into Pieces That Can Be Replicated.

What would happen if cell division is not followed after DNA replication?

If cell division is not followed after DNA replication then the replicated chromosomes (DNA) would not be distributed to daughter nuclei. A repeated replication of DNA without any cell division results in the accumulation of DNA inside the cell.

How fast does DNA replication occur?

In comparison, eukaryotic human DNA replicates at a rate of 50 nucleotides per second. In both cases, replication occurs so quickly because multiple polymerases can synthesize two new strands at the same time by using each unwound strand from the original DNA double helix as a template.

Where does DNA replication occur?

DNA replication occurs in the cytoplasm of prokaryotes and in the nucleus of eukaryotes. Regardless of where DNA replication occurs, the basic process is the same.

What is the first step in DNA replication?

The first step in DNA replication is to 'unzip' the double helix structure of the DNA? molecule. This is carried out by an enzyme? called helicase which breaks the hydrogen bonds? holding the complementary? bases? of DNA together (A with T, C with G).

What are the 3 stages of DNA replication?

The three steps in the process of DNA replication are initiation, elongation and termination.
  • Replication Basics. Replication depends on the pairing of bases between the two strands of DNA.
  • Initiation.
  • Elongation.
  • Termination.

How does DNA replication happen so fast?

DNA polymerase can transcribe eukaryotic chromosomes at a rate of about 50 base pairs per second. If the chromosome had but a single origin of replication, it would take about a month to copy one DNA helix. By using multiple origins, the cell can replicate a helix in about an hour, a 720-fold speedup.


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