Before revision: The macromolecules that encode and translate information in living systems, DNA and RNA, exhibit distinctive structural asymmetries, including homochirality or mirror image asymmetry and 3' -5 ' directionality, that are invariant across all life forms.
After revision: The macromolecules that encode and translate information in living systems, DNA and RNA, exhibit distinctive structural asymmetries, including homochirality or mirror image asymmetry and 3' - 5 ' directionality, that are invariant across all life forms.