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Re:A Scientist Finds Her Child’s Rare Brain Illness Stems fr... by Retric on Saturday May 19, 2018 @08:59AM (#17107713)
I think your correct. 3 billion base pairs so with ~3 mutations per person it's 1/billion per child per location. But, lots of children (~2 per researcher and many researchers), lots of valid locations as researchers study many specific locations etc.

IMO, odds of something like this happening is fairly high.

PS: I don't think gender means anything here as the same story would get out if it was a male researcher.

Re:A Scientist Finds Her Child’s Rare Brain Illness Stems fr... by arkades on Saturday May 19, 2018 @09:35AM (#17107840)
It’s also not a random draw. Genes that have a significant impact on human development are the ones that cause disease - and by extension, draw the attention of researchers.