Genetics

Why does DNA replicate before the cell divides?

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2011-09-13 23:50:07
2011-09-13 23:50:07

so that there will be two sets of DNA ... one for each new cell. If the DNA doesnt replicate one new cell would have no DNA. and cells need DNA.

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Before a cell can reproduce, it must first replicate, or make a copy of, its DNA.This is so that when it divides, each of the daughter cells will receive a copy of the DNA.


DNA replication begins when the two sides of the DNA molecule unwind and seperate, like a zipper unzipping.


the DNA must be replicated before the cell divides


When cells divide, the new cells produced must have a full set of genes in order to function correctly. Genes are made of DNA so it is necessary to replicate (copy) the DNA before the cell divides.


Cells do not replicate "In DNA". Cells replicate their DNA during the process of cell division.


Before a cell divides, strands of DNA in the nucleus must be copied.


A cell makes copies of its DNA before it divides to pass on it's genetic information to the new cell. The parent cell needs to keep a DNA copy for itself to continue to replicate and adapt. That's right, all is not set in stone. Research shows DNA is adaptive, too. It responds to the environment, available food supplies, etc.



they both replicate all their DNA and use the process of cytokinesis when the cytoplasm divides with the cell


Your DNA is copied into the new cell every time it divides


the 1 cell divides into 2 different cells by the end of mitosis


Process by which a cell duplicates its DNA before it divides.


DNA replicates itself to produce offspring during mitosis which is cell division. When a cell divides, it needs a second set of DNA so that the offspring will have an identical set of DNA as well.


Because each cell needs its own set of DNA, there must be two sets of DNA present in a cell before it divides into two.


DNA replicates before a cell divides ensures that each daughter cell has a complete set of genetic material They must have an identical set of DNA.


DNA replication occurs in the nucleus of the cell - just before the cell divides.


Because the DNA that is replicated will be put into the new cell during division


DNA must replicate before cell division to make sure that each daughter cell is genetically identical.


DNA replicates before a cell divides to give a complete set of genetic instructions to each daughter cell.


Each cell needs to have DNA in it in order to function (with the one key exception of a red blood cell which has no nucleus). In order to make sure each copy of the cell that is produced during cell division has the necessary information to function,the DNA must first be replicated and then each of the cells gets one copy of the DNA.


DNA must replicate itself before mitotic cell division so that the two new daughter cells have the same amount of DNA, and identical DNA.


Chromosomes are found in the nucleus of a cell and the function of chromosomes is to hold the genes (made form DNA) and to replicate the genes when a cell divides.


So that there are an equal set of the same DNA in each cell after mitosis occurs.


If the DNA did not replicate, daughter cells would not be formed.


Before a cell divides, DNA replicates so that each daughter cell has a complete of genes. When completed, each DNA molecule formed is half new and half old.



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