5 Apr 2022 8:28 am
I only take exception with this last sentence of yours. It is a fantasy based not on fact, but upon fiction, and you are using it to bolster your assumptions about evolution and the binary gender model. It's not that your conclusion is wrong, it's simply that there is no alien life form which anyone on this planet of ours has ever encountered. Any alien life form which would be within our reach of observation would be extremely simple and could be non-carbon based and non-gender based.
therefore even if we found some alien life form that also engaged I sexual reproduction logically we could assume they only have 2 sexes. A third sex would have no reason to evolve because it has no advantage.
For advanced life, such as any animal and plant life we encounter on Earth to evolve, there must be phosphorous. Phosphorous is a relatively heavier element which can only be produced by extremely rare stellar events involving 3rd generation stars. For that reason, it is quite rare and inaccessible on most other planets. The same goes for most heavy elements, but only Phosphorous (heavier element) is necessary for the production of all energy in 95% of plant and 100% of animal life on Earth.