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How did researchers find out that it was only the maternal chromosome that underwent deletion in Angelman syndrome?
It is known that in Angelman syndrome, the chromosome 15 undergoes deletion in the maternal chromosome while in Prader-Willi it's in the paternal.
I understand it can be detected by FISH or other ...
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What's the difference between a free chromosome fragment and an extrachromosomal array?
This is reference to a review on C. elegans mosaic analysis by Yochem and Herman, in which the authors make a distinction between free chromosome fragments and extrachromosomal arrays.
For the former,...
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