Joseph Ecker's teenage son listened intently as his father told him about the 1000 Genomes Project, which aims to sequence and compare the genomes of 1,000 people. Ecker, a molecular geneticist, explained that he and his colleagues were launching a similar project for the plant Arabidopsis thaliana. "My son said, 'Well then you should sequence 1,001'," Ecker recalls. "He's a very competitive kid."
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