Doesn't explain the differential population in coral and humans; the simpler organisms have shorter lifespans, it should matter less if they're susceptible to a

Doesn't explain the differential population in coral and humans; the simpler organisms have shorter lifespans, it should matter less if they're susceptible to an external influence. More likely there are so many receptors because the type and mechanism of cell death is important for the programming of complexity in organisms and macroorganisms.