Uncommon Carriers

People have a surprising number of rare genetic variants

By Tina Hesman Saey, 12:27 PM August 9, 2012

If variety lends life flavor, then humans are kicking things up to a previously unrecognized notch on the spice-o-meter.

New efforts to decipher the genetic blueprints of thousands of people have turned up more than half a million tweaks in human DNA, many more than scientists expected. Most of these tweaks are new to science, and a majority fall into a class called “rare variants,” found in 0.5 percent of the population or less. Some of the variety recently uncovered is so uncommon that it...

Source URL: https://www.sciencenews.org/article/uncommon-carriers