Dictionary

junk DNA

noun

Definition of JUNK DNA

:  a region of DNA that usually consists of a repeating DNA sequence, does not code for protein, and has no known function

First Known Use of JUNK DNA

1972

junk DNA

noun \ˈjəŋk-\   (Medical Dictionary)

Medical Definition of JUNK DNA

:  a region of DNA (as spacer DNA) that usually consists of a repeating DNA sequence, does not code for protein, and has no known function

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