CBC | What at-home DNA tests can tell about you — and what they can't

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Published: 16Jul2019

At-home DNA testing kits have become a mainstream product for offering a look into a user's genetic heritage and even health pre-dispositions. 

While they can offer insight into one's lineage, the results are often an approximation of genetics combined with results from their database of customers.

"It's pretty easy to identify siblings or first cousins in their database of participants," said McGill University human genetics professor Simon Gravel.

"Once they go beyond very close relatives they try to do averages … they'll build statistical models to try to tell you, you know, on average where they think your ancestors came from."

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