If the hidden trait theory is correct, shouldn’t mutations that are only useful in a particular context be disproportionately recessive? That seems like a hypothesis that could be tested.
Why always 2 sexes (outside of weird fungi)
In Biology classes, I was taught that it’s because the more “different” the sexes were, the more viable their offspring, so if a species started with 10 sexes, the 2 extreme ones outcompeted the others. I don’t remember the reason given for the value of “difference”, maybe some chemical reactions going faster. I don’t know if it’s still the consensus (or ever was).
If the hidden trait theory is correct, shouldn’t mutations that are only useful in a particular context be disproportionately recessive? That seems like a hypothesis that could be tested.
In Biology classes, I was taught that it’s because the more “different” the sexes were, the more viable their offspring, so if a species started with 10 sexes, the 2 extreme ones outcompeted the others. I don’t remember the reason given for the value of “difference”, maybe some chemical reactions going faster. I don’t know if it’s still the consensus (or ever was).