I think i misunderstood the question of the original poster. And yes, i was saying, is it possible to be white and 90% SSA ? If i have a pure african Black father and a pure european White mother, shouldn't i be 50% / 50% autosomally speaking ? or this is completely irrelevent ?^^I don't understand the question.
Do you mean is it possible to be 90% SSA and not "look it"? I doubt it.
When you get to 25 or 30 percent it would depend on the pigmentation snps and facial features, hair features, etc. inherited. It could differ even within a family.
There's a very interesting biography about an intellectual of the sixties named Anatole Broyard, who "passed" for most of his adult life. He was a "colored Creole" from New Orleans by ancestry. When they moved north for work, his parents passed for "white" to get work, but maintained their "black" identity in their private, social lives. He didn't. He denied strenuously that he had African ancestry, up until he was on his death bed.
I don't want to seem to be "judging" him. It was terrible in many ways living as an African-American in those years and even worse before then.
This is the book his daughter wrote:
One Drop: My father's hidden life
This is the New Orleans family he left behind. His daughter is in the center, back row.
His sister, interestingly enough, was married to a civil rights leader. She never "outed" him.
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