In about a quarter of cases the foreign genes have appeared in the next generation.
ECONOMIST: Human fertility
The knock against Monsanto's technology was the use of foreign genes, something that Peribere says zinc fingers can avoid.
FORBES: A Whole New Crop
Mr Kerry, who chaired the foreign relations committee during his 28 years in the Senate, said the Foreign Service was in his genes.
BBC: John Kerry starts first day at US state department
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