Fragile X pedigree + rflp autoradiograph
- Wessex Reg. Genetics Centre
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Fragile X pedigree and restriction fragment length polymorphism (rflp) autoradiograph showing CGG repeat expansion. The bands on the autoradiograph represent fragments of DNA from the Fragile X chromosome which have been cut by enzymes at specific base sequences. Repeats of the base sequence CGG are characteristic of this chromosome defect.