White Men Can’t Jump?

From William Saletan, in Slate

A few days ago, I wrote about a test, now being marketed in the United States, that predicts whether your toddler has more potential as a power athlete or as an endurance athlete. The test examines ACTN3, a gene that affects fast generation of muscular force. Fray poster Andrea Freiboden isn’t impressed. “What a lot of crap. Just look at the race of the athlete,” she writes:

“Generally, people of West African origin have more fast twitch muscles which allow intense bursts of power. This is why running backs, defensive linemen, and receivers are almost all black. We don’t need any expensive test…”

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