What is the Role of Nucleic Acid Sequences in Disease Diagnosis?

Nucleic acid sequences play a crucial role in the diagnosis of diseases at the molecular level. For example, specific mutations in DNA sequences are linked to various cancers, genetic disorders, and infectious diseases. By analyzing these sequences in tissue samples, pathologists can diagnose conditions more accurately and tailor treatment strategies accordingly. Techniques like fluorescence in situ hybridization (FISH) are often used to detect chromosomal abnormalities in cancer cells.