DD's brain functions most like mine, mine is most like my mom's, and hers most like her dad's. So it would seem that if there's any pattern here, it's fathers-to-daughters, and mothers-to-sons.

Except, my mom has 5 siblings of mixed genders, and all of them exhibit some traits of giftedness, though all in completely different ways. I suspect that the apparent pattern has more to do with inheritance of a peculiar set of personality traits in addition to the intellectual component.

So yeah, my anecdotal observations support the "it's complicated" hypothesis.

We have one of those medical professional exclamations on tape, too. It was in the delivery room. DD wasn't even out yet.