Humans, Chimps Think Different

That's good news.
If the gene sequences themselves are very similar, then one hypothesis is that it's differences in the gene levels and regulations (that account for the differences) -- when and where they're expressed and how much

The researchers also found that the genes were more often turned on, or "upregulated" in the human brain as opposed to the chimp brain. Although they don't know why this is, the scientists believe this finding might be a key to new insights.

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