defined:

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.

explained:

Listen to a detailed explanation.

Dr. William Pavan, of the National Human Genome Research Institute's Laboratory of Genetic Disease Research, defines deletion.

illustrated:

View illustration

related
terms:

chromosome, deoxyribonucleic acid (DNA), gene, genome, mutation

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