Molar ratios of DNA bases: Chargaff's Rules
Across a range of
species, the molar
of the [A] to [T] bases, and of [G] to [C]
are equal. The ratio of [A+T] to [G+C] varies among
with [G+C] bases typically less abundant. For example, in
humans the [G+C] content is 39.4%.