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The division of DNA is called replication.
The two strands of DNA are separated with the help of an enzyme, helicase. Each strand of DNA then "grows" a new strand along its length. The new strands are formed from free (uncombined) nucleotides. These nucleotides obey the rules of base pairing, so where the old strand has an A (adenine), the nucleotide that moves into position opposite it in the new strand has a T (thymine). Likewise C (cytosine) pairs with G (guanine).
Each old strand is described as acting as a template for the formation of the new one.
The nucleotides of the new strands are "stitched together" by enzymes called DNA polymerases.
DNA replication is called semi-conservative, because each resulting molecule of DNA has one old strand and one new one.
For more information, for example on the roles of the different DNA polymerases, and on such niceties as lagging strands and Okazaki fragments, use the links below.
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What happens to DNA and chromosomes when cells in most parts of the body divide?
The DNA and chromosomes divide with it
Cells must copy their DNA before they do what?
Cells must copy their DNA before they can divide into new cells. Replication (of DNA) before division (of the cell)
Is DNA condensed in S phase?
DNA is duplicated in the S phase because in the G1 phase the cell is growing and not yet ready to divide, then DNA copies as the first step for when it is getting ready to divide. In the G2 phase the cell continues to get ready to divide once the DNA is copied.
What is DNA packaged into?
When a cell is getting ready to divide, the DNA will coil itself with the help of proteins into a chromosome.
When a cell divide DNA condenses into a rod-like what?
you never did
What happens to DNA and chromosomes when cells in most parts of the body divide?
The DNA and chromosomes divide with it
Cells must copy their DNA before they do what?
Cells must copy their DNA before they can divide into new cells. Replication (of DNA) before division (of the cell)
Is DNA condensed in S phase?
DNA is duplicated in the S phase because in the G1 phase the cell is growing and not yet ready to divide, then DNA copies as the first step for when it is getting ready to divide. In the G2 phase the cell continues to get ready to divide once the DNA is copied.
Why is an replication of DNA essential in al cells?
DNA replication is necessary as cells constantly divide.
When does DNA replacation occur?
Whenever cells divide.
What is the role of centrioles?
Centrioles help divide DNA during cell division.
How could you determine what percentage of a strawberry's mass is DNA?
Divide the weight of the strawberry's DNA by the strawberry itself.
What is DNA packaged into?
When a cell is getting ready to divide, the DNA will coil itself with the help of proteins into a chromosome.
During DNA replication does the DNA molecule divide into two strands?
yes one being a strand of DNA and the other being mRNA
When cells divide what portion must be divided exactly?
The DNA.
When a cell divide DNA condenses into a rod-like what?
you never did
DNA replication occurs?
The Replication of DNA does occur before the cell can divide.
