The following table is a representative sample of Erwin Chargaffs 1952 data, listing the base composition of DNA from various organisms and support both of Chargaffs rules. An organism such as φX174 with significant variation from A/T and G/C equal to one, is indicative of single stranded DNA.
! scope=col|Organism!!scope=col|Taxon!!scope=col|%A !!scope=col|%G !!scope=col|%C !!scope=col|%T !!scope=col|A / T !!scope=col|G / C !!scope=col|%GC !!scope=col|%AT
| Maize || Zea || 26.8 || 22.8 || 23.2 || 27.2 || 0.99 || 0.98 || 46.1 || 54.0
| Octopus || Octopus || 33.2 || 17.6 || 17.6 || 31.6 || 1.05 || 1.00 || 35.2 || 64.8
| Chicken || Gallus || 28.0 || 22.0 || 21.6 || 28.4 || 0.99 || 1.02 || 43.7 || 56.4
| Rat || Rattus || 28.6 || 21.4 || 20.5 || 28.4 || 1.01 || 1.00 || 42.9 || 57.0
| Human || Homo || 29.3 || 20.7 || 20.0 || 30.0 || 0.98 || 1.04 || 40.7 || 59.3
| Grasshopper || Orthoptera || 29.3 || 20.5 || 20.7 || 29.3 || 1.00 || 0.99 || 41.2 || 58.6
| Sea urchin || Echinoidea || 32.8 || 17.7 || 17.3 || 32.1 || 1.02 || 1.02 || 35.0 || 64.9
| Wheat || Triticum || 27.3 || 22.7 || 22.8 || 27.1 || 1.01 || 1.00 || 45.5 || 54.4
| Yeast || Saccharomyces || 31.3 || 18.7 || 17.1 || 32.9 || 0.95 || 1.09 || 35.8 || 64.4
| E. coli || Escherichia || 24.7 || 26.0 || 25.7 || 23.6 || 1.05 || 1.01 || 51.7 || 48.3
| φX174 || PhiX174 || 24.0 || 23.3 || 21.5 || 31.2 || 0.77 || 1.08 || 44.8 || 55.2