What factor causes the specific severity and reaction profile of a Mojave rattlesnake bite to vary geographically?

Answer

The variable concentration of neurotoxic vs. hemotoxic components

The specific components present in the venom vary depending on the geographical location of the individual snake, leading some populations to yield venom that is predominantly neurotoxic while others are more hemotoxic.

What factor causes the specific severity and reaction profile of a Mojave rattlesnake bite to vary geographically?
ToxicityvenomsnakeRattlesnakemojave