Diagram illustrating results of fragile X analysis by PCR
Bands are drawn to simulate the way they actually appear.

Examples given are:

Male, normal: 29 repeats
Female, normal: 30 and 28 repeats
Female, grey zone: 50 repeats (grey zone) and 19 repeats (normal allele)
Female, premutation: 84 repeats (premutation) and 22 repeats (normal allele)
Male, premutation: 76 repeats
Male, full mutation: No normal band. The full mutation must be confirmed by Southern blot analysis.

Annette K. Taylor, M.S., Ph.D.
Kimball Genetics, Inc.
101 University Boulevard, Suite 330
Denver, CO 80206
800-320-1807