Scientists alter developing brain to resemble that of another species

Scientists at the Georgia Institute of Technology have found that by applying chemicals to manipulate genes in a developing embryo, they've been able to change the brain of one type of cichlid fish to resemble that of another. The researchers also discovered differences in the general patterning of the brain very early in development before functional neurons form in a process known as neurogenesis. This finding is at odds with a well-held theory known as "late equals large." The research appears in the Proceedings of the National Academy of Sciences Online Early Edition beginning May 3, 2010.

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