Or, Junk DNA — were originally considered sequences of DNA that had no (currently) known function. Most of the genome, it was thought, was comprised of these sequences. Non-coding DNA is essentially DNA that does not encode information that is used in producing protein assemblies for use in the cell's molecular machinery.

For decades, the notion of "junk" DNA had been promoted as unquestionable scientific truth because it is predicted by Darwinian Evolutionary theory. In spite of this false narrative and a considerable amount of derision directed at those who question it, recent studies have now demonstrated that these sequences do contribute to the functionality of cells. For this reason the term "non-coding DNA" has become preferred over the term "junk DNA."



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Resources

• The MYTH of Junk DNA (Long Story Short, Ep. 12)
• Un-junking junk DNA
• Caltech Finds Amazing Role for Noncoding DNA