Sen. Elizabeth Warren, D-Mass., released a DNA analysis to clarify questions about her Native American heritage, something President Trump commonly mocks. Warren is considering a 2020 presidential bid.
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DNA sleuthing helped identify Joseph James DeAngelo, the suspected East Area Rapist, who was arraigned in a Sacramento, Calif., courtroom in April.
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DNA isolated from a small sample of saliva or blood can yield information, fairly inexpensively, about a person's relative risk of developing dozens of diseases or medical conditions.
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