Deletion

A particular kind of mutation: loss of a piece of DNA from a chromosome. Deletion of a gene or part of a gene can lead to a disease or abnormality. See also chromosome, gene, genome, mutation

A loss of part of the DNA from a chromosome; can lead to a disease or abnormality. See also: chromosome, mutation

Deletion is the process whereby data is removed from active files and other data storage structures on computers and rendered inaccessible except using special data recovery tools designed to recover deleted data.

A mutation involving the removal of one or more base pairs in a DNA sequence. Large deletions are sometimes microscopically visible in karyotype analyses.