Processes of genome evolution reflected by base frequency differences among Serratia marcescens genes.
The G + C content of silent sites in codons varies greatly among Serratia marcescens genes; the value in any one gene seems to reflect a balance between mutation pressure towards high G + C content and natural selection constraining choice among synonymous codons. Interestingly, non-coding sequences have substantially lower G + C content than silent sites thought to be under little selective constraint.
Sharp
P M
PM
Department of Genetics, Trinity College, Dublin, Ireland.
D001482:Base Composition; D005075:Biological Evolution; D003062:Codon; D005798:Genes, Bacterial; D012706:Serratia marcescens / Q000235:genetics*
D003062:Codon