Letters that make junk DNA
a, j, d, k, n, u are letters that make 'junk DNA'
1 possible definitions for 'junk DNA'
Under this definition, junk dna is a noun and has the following properties:
'junk DNA' can be a type of deoxyribonucleic acid, desoxyribonucleic acid, DNA.
"most of the genome consists of junk DNA"