Tag Archive for Junk DNA

Zeroing In On Dark Matter

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By Richard Saltus

If the human genome – the complete set of  DNA blueprints in a cell for building a human being — is truly “the book of life, ”  as it has been called, then 99 percent of life’s book is gobbledygook.

Only 1 percent of the DNA contains genetic instructions for making the body’s proteins; most of the rest of it has no known purpose, earning it the unappealing title of “junk DNA” or the more ominous sounding “dark matter.” In addition to containing all of life’s necessary genetic instructions, the 1 percent had also been home to all known cancer-causing mutations.

Until recently.

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