What is the definition of mutation?
An organism decides to make changes in its appearance, phenotype.
An organism decides to make changes in its genes, genotype.
The random changing of the structure of DNA, resulting in a changed gene that may be passed onto offspring.
An organism gets a new genotype and phenotype because it moved to a new location.
The correct definition is:
The random changing of the structure of DNA, resulting in a changed gene that may be passed onto offspring.