junk DNA

Noun

 * 1)  Any portion of the DNA sequence of a chromosome or a genome with no apparent function.

Usage notes

 * Some prefer the term, to avoid the a priori assumption of total non-functionality.

Translations

 * French: ADN poubelle
 * German: nichtkodierende Desoxyribonukleinsäure, nichtkodierende DNS
 * Japanese: ジャンクDNA
 * Swedish: skräp-DNA