Meaning of JUNK DNA

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WordNet Dictionary
	Definition:		[n]  stretches of DNA that do not code for genes; "most of the genome consists of junk DNA"
	See Also:		deoxyribonucleic acid, desoxyribonucleic acid, DNA
Glossary
	Definition:		Stretches of DNA that do not code for genes; most of the genome consists of so-called junk DNA which may have regulatory and other functions. Also called non-coding DNA.