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Does the cell copy its DNA?
Cells will duplicate or copy their DNA right before they divide. The process of cell division is called mitosis. 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. So this process of duplicating DNA is very important.
What phase does the cell copy in DNA replication?
S phase
In the eukaryotic cell cycle, chromosome duplication occurs during “S phase” (the phase of DNA synthesis) and chromosome segregation occurs during “M phase” (the mitosis phase).
How does the cell make a copy of a chromosome?
After DNA replication, each chromosome now consists of two physically attached sister chromatids. After chromosome condensation, the chromosomes condense to form compact structures (still made up of two chromatids). As a cell prepares to divide, it must make a copy of each of its chromosomes.
Why do we copy DNA?
DNA replication needs to occur because existing cells divide to produce new cells. Each cell needs a full instruction manual to operate properly. So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
What is DNA copying why it is important?
The process of producing two identical copies of DNA from one original DNA molecule during cell division is known as DNA copying. DNA copying generates variation during sexual reproduction which leads to evolution. Also, the copying of DNA helps in transfer of characters from parents to offsprings.
Why do cells intentionally replicate duplicate their genetic information?
Each chromosome is duplicated so that the cell contains two lots of DNA. This DNA replication is necessary so that when the cell divides both cells will have identical chromosomes and genetic information. DNA replication is the duplication of all of a cell’s genetic material.
What does each new copied cell require?
Cell replication splits a cell into two parts, both of which become new, fully functioning cells. Before this can happen, however, cells require a full complement of DNA for each of the new daughter cells that will form as a result of the split.