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6 March 2014 1:04 pm ,
Vol. 343 ,
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
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ScienceShot: First Look at Marijuana's Genetic Code
19 October 2011 8:01 pm
Attendees at Burning Man, the famously free-wheeling yearly Nevada art gathering, don't usually take note of new genomic sequences, but they may want to check out a paper published today in Genome Biology. In it, scientists report that they've sequenced most of the genetic code of the fibrous plant species Cannabis sativa. The team's specimen of choice: a marijuana cultivar called Purple Kush. The genome may give researchers new insight into what makes the pot plant so, ahem, popular at folk festivals. Comparing Purple Kush with another popular form of the same plant—the hemp-fiber producing Finola varietal—the group found that one gene critical for churning out the precursors to the chemical that gives pot its kick, tetrahydrocannabinol or THC, had been turned off. Purple Kush plants, in turn, produced little to no cannabidiolic acid, a similar compound found in hemp plants, possibly because these molecules suck up the building blocks needed for THC. Far-out news, even for those who don't inhale.
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