it is suggested that gene amplification is the mechanism universal for all classes of organisms and necessary for : 1 ) rendering the needed overhigh level of gene expression provided that the efficiency of the given gene transcription reaches in maximum ( adaptive amplification ) , 2 ) preferential genome replication in case the efficiency of replication initiation reaches its maximum ( competitive amplification ) , 3 ) rendering the essential stable dna-protein interaction , if this interaction is damaged by dna deletion ( compensatory amplification ) .
C0017262
gene expression
C0040649
gene transcription