GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2006-10 > 1161125419
From: "Alfred A. Aburto Jr." <>
Subject: Re: [DNA] Population genetics: DNAs from the EuropeanNeolithic FULL TEXT
Date: Tue, 17 Oct 2006 15:50:19 -0700
Thank you Ann!
>It's defined at Wikepedia as "an error in the way scientific research is
>conducted such that a false association is produced by unintentional non-random
>sampling of two study populations."
>In ancient DNA studies, one example of ascertainment bias could occur if the
>remains available for study are available only because of different burial
>practices in a certain segment of the population.
>Jobling's article "The Human Y Chromosome: An Evolutionary Marker Comes of
>Age" has a sidebar about ascertainment bias and Y chromosome markers. I liken it
>to the parable of the drunk looking for his car keys under the streetlight
>because it was dark where he dropped them. We can only study markers we already
>know about from previous research in limited populations.