Amy, i'm not sure exactly how PGD works (as in the processes) - but i would think PCR would be a requirement (it is the process by which they amplify the number of copies of the gene they're looking for). they only take one cell to test, so they need to amplify the information HEAPS to have enough to run through the tests

Trying to drag up my genetics study from years ago, translocation is where a section of DNA moves from where it SHOULD be, to another location on the DNA strand, and changes the structure and action of a whole section of DNA. i can't recall exactly what Aneuploidy is, but i think it's to do with having a section of DNA repeat when it shouldn't, changing the characteristics of that segment (i'm running on really fuzzy memories from study at uni!) - i may be wrong here, but it's vaguely familiar

essentially, i'd think that, depending on the type of genetic anomaly that leads to the muscular dystrophy, they'd run PCR and then one or the other of those two other cycles to locate the "dodgy" gene. Melbel has gone through IVF/PGD - hopefully she'll find this thread and pop in with a better answer...

hope it's all a theoretical issue for you anyway

BG