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A mutation is a change in the sequence of nucleotides that make up DNA. Changes can cause a change in phenotype when they change a gene or regulatory sequence, but can be silent mutations when a stretch of so called 'junk DNA' is affected.

A mutation can be either a spontaneous occurrence or induced by environmental factors such as free radicals / ionising radiation.

Mutation is considered to be the driving force behind evolution, regardless of where it all originates from: evolution (change) through mutation is a fact.

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16y ago

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Does mutation change the order sugars DNA molecule?

No. Mutation changes the sequence of nitrogen bases in a DNA molecule.


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A change in the nucleotide base sequence of gene or DNA molecule is called a what?

this is called a mutation


What is the change in the nucleotide-base sequence of a gene or a DNA molecule?

this is called a mutation


What is a change in the nucleotide base sequence of a gene or DNA molecule?

this is called a mutation


A involves the addition or deletion of a single base in a DNA molecule.?

A Frameshift mutation


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What is a change in the base sequence of DNA molecule?

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Is a change in the base sequence of a DNA molecule?

a kind of mutation called deletion or insertion


What can a genetic mutation cause?

A genetic mutation can cause a variation, which may be harmless, or may be harmful, depending on where on the DNA molecule it occurs.


What is the change in the sequence of bases in a DNA molecule most accurately referred to as?

The change in the sequence of bases in a DNA molecule is most accurately referred to as a mutation. Mutations can occur due to errors in DNA replication, exposure to certain environmental factors, or as a result of genetic inheritance.


Which do you suppose would be more harmful A mutation that changed the nucleotide sequence of an mRNA molecule or a mutation that changed the nucleotide sequence of a DNA molecule?

A mutation in a DNA nucleotide sequence would be more harmful than a mutation in a mRNA nucleotide sequence because it could cause the synthesis of multiple nonfunctional proteins in comparison to a mutation in a mRNA nucleotide sequence that would be less harmful because it would result in a few nonfunctional proteins.