Deletion (genetics) - Detection

Detection

The introduction of molecular techniques in conjunction with classical cytogenetic methods has in recent years greatly improved the diagnostic potential for chromosomal abnormalities. In particular, microarray-comparative genomic hybridization (CGH) based on the use of BAC clones promises a sensitive strategy for the detection of DNA copy-number changes on a genome-wide scale. The resolution of detection could as high as >30,000 "bands" and the size of chromosomal deletion detected could as small as 5–20 kb in length.

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