DNA

Researchers identify genes that may cause stuttering

Drawing on previous research suggesting that stuttering might have genetic origins, a new study published in the New England Journal of Medicine may have identified precisely which genes cause stuttering in certain people. Stuttering, the disorder characterized by repetition, delay and interruptions in speech, impacts an estimated 1% of …

The Roots of Individuality

Why do different people’s minds work so differently? Human brain cells don’t follow a set DNA script. Instead, they contain a surprising number of mobile elements — or “jumping genes” — that let them reorganize their genetic code.

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