Definition of junk dna in English English dictionary
Any portion of the DNA sequence of a chromosome or a genome for which no function has been identified
DNA that does not code for proteins or their regulation but constitutes approximately 95 percent of the human genome. It is postulated to be involved in the evolution of new genes and possibly in gene repair
stretches of DNA that do not code for genes; "most of the genome consists of junk DNA"
stretches of DNA that do not code for genes; "most of the genome consists of junk DNA