Which of the following is most likely to cause a change in the genetic traits in an isolated population of a ground-dwelling lizard species?
The exposure of an individual lizard in the population to radiation that causes a mutation that is not passed on to its offspring.
An unusually dry summer in the lizard population's ecosystem.
The introduction of an invasive predator that preys on the brightest-colored individuals in the lizard population.
A fast-moving wildfire that burns the canopy of the trees in the lizard population's ecosystem.