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In 2007, researchers were dazzled by the degree to which genomes differ from one human to another and began to understand the role of these variations in disease and personal traits.

Science recognized "Human Genetic Variation" as the 2007 Breakthrough of the Year, and detailed nine other of the year's most significant scientific accomplishments in its 21 December issue.

 

"For years we've been hearing about how similar people are to one another and even to other apes," said Robert Coontz, deputy news editor for physical sciences who managed the ion process. "In 2007, advances on several fronts drove home for the first time how much DNA differs from person to person, too. It's a huge conceptual leap that will affect everything from how doctors treat diseases to how we see ourselves and protect our privacy."