title: Estimate of the genome size of various microorganisms.
abstract: Bacterial genome sizes, determined by deoxyribonucleic acid reassociation kinetics, vary over a 10-fold range. The smallest studied, Chlamydia trachomatis, had a genome of 6 x 10(5) nucleotide pairs compared to 4.5 x 10(6) for Escherichia coli.
mesh_terms: D001699:Biometry; D002689:Chlamydia; D003090:Coliphages; D004269:DNA, Bacterial / Q000302:isolation & purification; D004279:DNA, Viral; D004926:Escherichia coli; D005827:Genetics, Microbial; D008722:Methods; D008967:Molecular Biology; D009343:Neisseria; D009691:Nucleic Acid Denaturation; D012281:Rickettsia; D013053:Spectrophotometry
chemical_list: D004269:DNA, Bacterial; D004279:DNA, Viral