junk dna: stretches of DNA that do not code for genes
deoxyribonucleic acid: (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
petrarchan sonnet: a sonnet consisting of an octave with the rhyme pattern abbaabba, followed by a sestet with the rhyme pattern cdecde or cdcdcd