3 ms·
But a nonzero number of animals and people die of tetrodoxin poisoning, so there is some pressure. Therefore if it were cheap and easy enough, it’s likely we al
by aqme28 1y ago
But a nonzero number of animals and people die of tetrodoxin poisoning, so there is some pressure. Therefore if it were cheap and easy enough, it’s likely we all would have evolved it. That cheapness threshold might just be incredibly high.
- amanaplanacanal 1y agoIf it is rare enough it probably doesn't exert much selection pressure. Has anybody modeled what percent of a population has to die from something for the protective gene to become widespread?
- gptacek 1y agoIf you're willing to abstract a bit from populations of animals to populations of bacteria, there is the minimum selective concentration (MSC), which is the smallest amount of antibiotic you can add to the growth medium and detect antibiotic resistant bacteria competing out non-antibiotic-resistant bacteria: https://revive.gardp.org/resource/minimal-selective-concentration-msc/?cf=encyclopaedia https://revive.gardp.org/resource/minimal-selective-concentr...
- thaumasiotes 1y ago> Has anybody modeled what percent of a population has to die from something for the protective gene to become widespread? The question is incoherent. The gene spreads if the organisms carrying it average more children. It unspreads if they average less. All of them could be dying of the same thing, and it wouldn't matter. The rate of spread is given by the https://en.wikipedia.org/wiki/Selection_coefficient https://en.wikipedia.org/wiki/Selection_coefficient , but cause of death isn't relevant.