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New copies of DNA have to be identical to the original strand so that the cells can function properly. If mistakes are made in DNA replication, it could cause a mutation to occur. In body cells, that means the possibility of tumors, including cancer. In gametes (sperm and egg cells), this could mean are very harmful genetic disorder, or it could be so bad that the organism produced by fertilization may not be able to survive.

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Q: Why do new copies of DNA have to be similar to the original strand?
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Related questions

How many strands are replicated in DNA replication?

Two - the leading strand and the lagging strand.


When DNA replicates the new strand is what to the original strand?

The original strands provide a template for making new strands.


During DNA replications a complementary strand of DNA is made for each original DNA strand thus if a portion of the original strand is CCTAGCT then the new strand will be?

CCAATTG


What is the role of the DNA new strand?

It is a copy of the Dna original strand.


What is the result of variations in copying of DNA?

The result of variations DNA copying is that the DNA copies generated will be similar but not identical to the original


What small DNA strand makes a copy of itself?

A virus is a small strand of DNA or RNA that copies itself.


How is anything genetically modified?

Scientists have the means to extract the DNA strand from a cell. Once the DNA strand is removed, it can be altered, then placed back into the cell. When the cell divides and multiplies - the new copies will retail the altered DNA rather than having the original.


What molecule copies the DNA coding strand and leaves the nucleus?

mRNA copies the information.Process is called transcription.


What is the new strand called in Dna replication?

semiconservative replication - original DNA double strand will unwind into 2 strands, so one original strand will serve as a template for synthesizing a new complementary strand , thus forming a new DNA (one with old strand and one with a new strand)


What does RNA polymerase use one strand of DNA as?

No. All strands can be replicated, just depends on where the enzyme decides to land and unzip it. Anyways, all DNA molecules would be adequate templates since they are all identical copies of each other.


Can DNA be described as conservation?

DNA replication is semi-conservative. This means that each new DNA molecule has one original strand of DNA and one new strand of DNA.


What determines the nucleotide sequence of the newly synthesised strand during DNA replication?

It must be the mirror image of the original half strand. (and the other strand, which is the mirror of the first is making the mirror of the mirror ... the original !)