Best Of The Web
“Identical twins have virtually identical DNA. So you’d think if a set of twins both sent in a DNA sample for genetic ancestry testing, they’d get the exact same results, right?
Not necessarily, according to a recent investigation by the Canadian Broadcasting Corporation. In fact, the journalists demonstrated that twins don’t often get the same results from a single company. And across the industry, estimates of where an individual’s ancestors lived can differ significantly from company to company.
In one instance, the consumer genetics company 23andMe told one twin she was 13 percent “Broadly European.” The other twin’s test, meanwhile, showed she had just 3 percent European ancestry. What’s more, when the twins had their DNA tested by five companies, each one gave them different results.
One computational biologist told the CBC that the differences in the results were “mystifying.”
So what accounts for these differences? Overall, discrepancies in ancestry testing don’t mean that genetic science is a fraud, and that the companies are just making up these numbers. They have more to do with the limitations of the science and some key assumptions companies make when analyzing DNA for ancestry.
The companies that provide ancestry testing, like Ancestry.com and 23andMe, deliver the precise ancestral breakdown of their customers’ DNA. They might say, for example, someone’s ancestry is 25 percent Italian, 74 percent East Asian, and 0.1 percent Sardinian. They also market their product in a way that suggests their test reveals something deeply meaningful about you.”
JJ Editor's Daily Picks
"Have world leaders really got the will to bring peace to Yemen? We hear much about Yemen’s crisis, but far less about the hypocrisy of states fuelling the very conflict they condemn."
"No poll so far in our database has tested Trump against the relatively unknown Weld... Indeed, Weld seems like one of the weakest candidates that anti-Trump Republicans could put up in a national campaign. "
"An initiative by the mayor of Tiberias for the municipality to help provide public transportation on the Sabbath has caused the issue of the social status quo to the forefront of public discussion."
"Like “30 Rock,” “Kimmy Schmidt” obviously slanted leftward, but most always exhibited a similar eagerness to skewer politics more generally than just the GOP."
"Yes, we’re all overwhelmed with email. One recent survey suggested that the average American’s inbox has 199 unread messages. But volume isn’t an excuse for not replying."
"... platforms now have a stranglehold over publishers who, individually and even as a group, have little-to-no bargaining power when it comes to algorithmic changes, ad rates, and much else."
"[There's] a subgenre known as National Socialist black metal, which espouses neo-Nazi views and has been described by the Southern Poverty Law Center as aiming to recruit youth to white-supremacist causes."
"“The Ideas That Made America” by Jennifer Ratner-Rosenhagen is an anomaly in the genre. Its brevity is a point of pride, yet it aspires to do a little of everything."
"My wish is to die in my own bed, cared for by people I love—clean, comfortable and relatively free from pain. I hope to have time to say my goodbyes and give my final blessings."
"A diet for fast weight loss is a pipe dream. Many of us want to lose weight without making permanent changes, because we view thinness instead of health as a success."
"Opportunity casts a long shadow over all subsequent Mars rovers, setting a gold standard of JPL engineering. Customized versions of its mobility software are used on the rovers Curiosity and upcoming Mars 2020."
"Biblical scholarship has deepened our understanding of the Torah and at the same time challenges us to consider the implications of our declaring the Torah to be emet. What is emet and what does it mean to say that the Torah is emet?"