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Some DNA Dismissed As 'Junk' Is Crucial To Embryo Development

Some DNA Dismissed As 'Junk' Is Crucial To Embryo Development

NPR - Richard Harris

One of the enduring mysteries of biology is why so much of the DNA in our chromosomes appears to be simply junk. In fact, about half of the human genome consists of repetitive bits of DNA that cut and paste themselves randomly into our chromosomes, with no obvious purpose. A study published Thursday …

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