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A comment on 23andMe lays off 100 people as DNA test sales decline. Parent comment

Re:23andMe lays off 100 people as DNA test sales decline by laurencerowe on Thursday January 23, 2020 @03:50PM (#22131851)
With 23 pairs of chromosomes we have 46 dominoes each (ignoring recombination.) This changes the odds of inheriting none of your mother's Scottish dominoes from 1 in a million (2^20) to 1 in 512 (2^9).
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Re:23andMe lays off 100 people as DNA test sales decline by nordsieck on Thursday January 23, 2020 @04:39PM (#22132445)
> This changes the odds of inheriting none of your mother's Scottish dominoes from 1 in a million (2^20) to 1 in 512 (2^9).

That may be true for mom, but conservatively, there's between a 1-in-100 and 1-in-20 odds of inheriting none of your father's dominoes.

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Re:23andMe lays off 100 people as DNA test sales decline by e_y_ on Thursday January 23, 2020 @06:27PM (#22133503)
It's been a while since I've taken high school biology, but the odds should be the same as the mother. Scottish-ness is not something that's limited to the X or Y chromosome.

Mitochondrial DNA will only come from your mother, but I don't think we're talking about that here.

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Re:23andMe lays off 100 people as DNA test sales decline by laurencerowe on Thursday January 23, 2020 @06:33PM (#22133547)
What's the mechanism at play here? Each chromosome pair is one from the father and one from the mother.
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Re:23andMe lays off 100 people as DNA test sales decline by nordsieck on Thursday January 23, 2020 @06:48PM (#22133679)
> What's the mechanism at play here?

cheating

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Re:23andMe lays off 100 people as DNA test sales decline by irrational on Thursday January 23, 2020 @04:25PM (#22132284)
Right, but unless you get your own results you have no idea how the dice rolled for you (how many other game metaphors can I use?).
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Re:23andMe lays off 100 people as DNA test sales decline by michaelt on Thursday January 23, 2020 @04:41PM (#22132474)
What if I don't give a shit about being "20% scottish" and only care about relatives-I-didn't-know-I-had and genetically-heritable-illnesses and my parents' reports were clean?
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Re:23andMe lays off 100 people as DNA test sales decline by kaikai on Thursday January 23, 2020 @06:08PM (#22133320)
Half siblings are probably the most interesting “relatives-you-didn’t-know-you-had” you can find! They might show up at any time, and you wouldn’t know without having your own account.
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