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Why is Klinefelter not discoverable by 23andMe?

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This is an educated guess: My initial reaction was that it was for quality control, but having thought about it, I think it's primarily for legal reasons. read more

Not only would this approach only detect SOME of the paternal nondisjunction events, the approach would NOT detect Klinefelter syndrome due to MATERNAL nondisjunction, since the mother’s two X chromosomes would be identical, and indistinguishable by 23andMe. read more

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