-- card: 15231 from stack: in
-- bmap block id: 26532
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-- background id: 2564
-- name: 


-- part contents for background part 1
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Only about 1 percent of the genetic information in human cells, seems to be actually used. Nobody at this time knows why the other 99 percent is there.

-- part contents for background part 2
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Chimpanzees are our closest animal relatives. Their DNA code is over 98 percent equivalent to human DNA.