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  • Regulation of the Lactase Gene

    Regulation of the Lactase Gene

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    Lactase persistence results from a mutation that changes how transcription factors interact, thereby affecting gene expression.

  • Recent Adaptations in Humans

    Recent Adaptations in Humans

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    Lactose tolerance, sickle cell anemia, and bitter taste perception are three examples of recently evolved human traits.

  • Using DNA to Trace Human Migration

    Using DNA to Trace Human Migration

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    All living humans originated from populations of ancestors who migrated out of Africa less than 100,000 years ago. Learn how scientists have used genetic markers to trace the migration routes and origins of modern human populations.

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