There's abundant evidence the majority of those who've thrown their money and abandoned their privacy to DNA testing seriously overestimate their intellect. They're too dim to know what they don't know.
NY and MD have it correct, don't attempt DNA testing on your own, you're not capable of interpreting results.
I'm (not) shocked, no one ever reads the T & C. Look what you've sold for $99 to Ancestry. "Privacy for Your AncestryDNA Test"
6. Can my DNA information ever be disclosed without my consent? —
Generally no. But there are some very limited circumstances where your DNA test results could be disclosed to third parties without your express consent. For example:
·As may be required by law with regulatory and law enforcement authorities;
·To prevent fraud or cybercrime (i.e.) to protect the rights or property of AncestryDNA or other Users (including outside your country of residence).
·To enforce our terms and conditions; to protect our rights, privacy, safety, confidentiality, reputation or property, and/or that of Ancestry family of companies, you or others.
·For more information please see the AncestryDNA Privacy Statement.
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Still not convinced?
Sizing Up the Family Gene Pool
http://www.nytimes.com/2012/02/26/magazine/ethicist-dna.html