Change, in a gene, in which a letter is left out, an incorrect letter is inserted, or a series of letters is left out, duplicated, or reversed

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A change in a gene that results in a different sequence of DNA is called a mutation. This can occur through different mechanisms such as a deletion, insertion, substitution, duplication, or inversion of DNA letters. Mutations can have different effects on the function of a gene, and can lead to genetic disorders or variability in traits within a population. Mutations can occur spontaneously or be induced by environmental factors such as radiation or chemicals.

Change, in a Gene, in Which a Letter Is Left