Fast component

From Biology-Online Dictionary | Biology-Online Dictionary

Fast component

(Science: molecular biology) a segment of eukaryotic dna consisting of highly-repeated nucleotide sequences which, when the entire duplex dna molecule is denatured (the double-stranded helix comes apart and becomes single strands) and then allowed to renature (the complementary single strands come together to form a helix), will be the first segment to renature.