Continuity and Change
Mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the gene.Mutations can involve large sections of DNA becoming duplicated, usually through genetic recombination. Mutation can result in several different types of change in sequences; these can either have no effect, alter the product of a gene, or prevent the gene from functioning properly or completely.
This picture shows what the mutation alter and changes. It changes your DNA.
Gene migration is the introduction of genetic material from one population of a species to another, which changes the composition of the gene pool of the receiving population. The introduction of new alleles through gene flow increases variability within the population and makes possible new combinations of traits.