单词	junk DNA
释义	junk DNA noun : a region of DNA that usually consists of a repeating DNA sequence, does not code for protein, and has no known function Word History First Known Use 1963, in the meaning defined above Medical Definition junk DNA noun ˈjəŋk-  : 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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