Genetics
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		GeneticsGene thought to cause obesity works indirectly
Researchers have discovered a “genetic switch” that determines whether people will burn extra calories or save them as fat.
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		ChemistryPathway pieced together to make opiates in yeast
Scientists have engineered yeast to make sugar into thebaine, a precursor to opiates such as morphine.
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		GeneticsHow an octopus’s cleverness may have evolved
Scientists have sequenced the octopus genome, revealing molecular similarities to mammals.
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		GeneticsAncestral humans had more DNA
A new genetic diversity map marks where humans have gained and lost DNA.
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		GeneticsHow Ethiopian highlanders adapted to breathe thin air
Lower levels of a heart protein may help Ethiopian highlanders breathe thin air, researchers report.
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		GeneticsWolves in jackals’ clothing
Africa’s golden jackals are really a species of wolf and deserve a name change, DNA evidence indicates.
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		LifeThe tree of life gets a makeover
Biology’s tree of life has morphed from the familiar classroom version emphasizing kingdoms into a complex depiction of supergroups, in which animals are aligned with a slew of single-celled cousins.
By Susan Milius - 			
			
		GeneticsResearch teams duel over Native American origins
Genetic link between Australia and the Amazon fuels two interpretations of Native American origins.
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		GeneticsMelonomics: Sounds like a cancer, smells like a melon
The project that published the first melon genome dubbed itself melonomics.
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		EarthBringing mammoths back, life on early Earth and more reader feedback
Readers debate the pros and cons of reviving extinct species, discuss the odd light-processing machinery of the eye and more.
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		GeneticsEnormous quantities may soon be called ‘genomical’
Genetic data may soon reach beyond astronomical proportions.
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		GeneticsGenetic switch wipes out tumors in mice
By switching on a single gene, researchers turned cancer cells in mice back into normal intestinal tissue.
By Meghan Rosen