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Answered 2010-09-22 23:38:25

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

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the DNA must be replicated before the cell divides


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.


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


Chromosomes must replicate so that both cells that are formed from cell division can have the same genetic material.


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.


A cell must make an exact copy of its genome before it divides. Genomes are the complete set of chromosomes present in a cell.


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


before the parent cells divide they have to find there matching cell


Before cell division can take place, the cell must replicate its genetic material (except in Meiosis II).


For a virus to replicate it must insert its own DNA into a host nucleus cell. This newly infected cell finds another host cell to replicate, and a viral infection is produced.


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.


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.


The DNA only needs to replicate if the cell is going to divide. In a dividing cell the DNA must replicate in order to provide a complete copy of the genome to each new cell.


because in order to replicate a virus must enter a host cell


Chromosomes must replicate so that both cells that are formed from cell division can have the same genetic material.


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.


A mother cell, or a gamete must have chromosomes that have replicated. Any parent cell must replicate their chromosomes, forming two sets of sister chromatids. This is known as a diploid cell. A cell must be healthy, with functioning centrioles, undamaged chromosomal 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.


DNA must replicate before meiosis can begin.


Each daughter cell must have a copy of the full cellular genetic material or there would be no reason for mitosis. Once the cell gives rise to two daughter cell it is too late to replicate the genetic material then.


cells must copy their DNA to replicate



they must find a host cell in the infected body and take it over to force it to replicate


2, because the chromosomes need to split before they can replace and replicate.


DNA doubles and produces sister chromatids before meiosis begins. the chromosomes must replicate



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