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Before you pay big money for caviar, check with two New York City high school students. Brenda Tan and Matt Cost worked with DNA1 barcoding experts at Rockefeller University and other researchers at the American Museum of Natural History to identify hundreds of food samples, assorted2 hairs and animal bits in their neighborhood. The Trinity School seniors discovered 95 different species of animal and 11 cases of fraudulent food labeling. Their findings appear in the January issue of the journal BioScience.
The professional researchers provided DNA sequences for the samples the students collected. The kids then checked the sequences against the database at barcodinglife.org
The high schoolers found everything from pigeons and Pomeranians to an invasive latrine fly and what looks to be at least a new subspecies of cockroach3. A supposed sheep’s milk cheese was actually from cows. And alleged4 sturgeon caviar was just cheap Mississippi paddlefish eggs. But there was good news: all eight classmates who provided hair for the study turned out to be human.
1 DNA | |
(缩)deoxyribonucleic acid 脱氧核糖核酸 | |
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2 assorted | |
adj.各种各样的,各色俱备的 | |
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3 cockroach | |
n.蟑螂 | |
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4 alleged | |
a.被指控的,嫌疑的 | |
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