I mean having an X or Y are pretty damn binary. DNA strand has binary pairs (A-T, C-G). The resulting codons have anitcodon pairs. Then within biological functions you have the parasympathetic system vs the parasympathetic system which do opposite things across the whole body, pro vs anti inflmmatory agents, activators vs inhibitors nearly on every level of biology.
Its actually rather astounding how much binary pairs play a role from the very core of physics.
Its actually rather astounding how much binary pairs play a role from the very core of physics.