At the Denver Museum of Nature and Science, children and their parents meander through the Expedition Health exhibit, chattering about science and bodies, peering through microscopes and conducting experiments.
A set of glass doors abuts the exhibit, and every once in a while, after a quick chat with a museum volunteer, a family makes its way through the doors.
Today, that family is the Bacas -- Tim, and daughters Raveania and Desiree, ages 12 and 11, from Aurora. They sit at a tall lab bench, and listen as Anjelica Miranda, dressed in a white lab coat, guides them through a taste test.
The Bacas are not aware of it yet, but they are taking part in one of the most unique science experiments in the country. Their taste test results, combined with that of hundreds of other museum visitors, may help scientists discover the genetic underpinnings of a sixth taste.