Sexual Reproduction and Gaia.
It is my view that sexuality is also symbiotic w/ Gaia, and in
particular the "male" gene is more related to cirrus ion movements
and the female, ocean based conductivities. It is probably an
extension of spores and multi celled complexities that arose with the
problem of how would Gaia feedbacks work with more complex forms of
Protein complexity is interesting, and probably initially was a way
that the nucleotides could "float" on the water top, and thereby
become part of the cloud dynamics.