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genomic instability

(jeh-NOH-mik in-stuh-BIH-lih-tee)
The increased tendency for DNA mutations (changes) and other genetic changes to occur during cell division. Genomic instability is caused by defects in certain processes that control the way cells divide. It occurs in many types of cancer. These defects may include mutations in certain genes involved in repairing damaged DNA or mistakes that don’t get corrected when DNA is copied in a cell. They may also include defects such as broken, missing, rearranged, or extra chromosomes. Studying genomic instability may help researchers understand how certain diseases, such as cancer, form. This may lead to new ways to diagnose, treat, and prevent disease.
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