Which process has most likely occurred when new traits appear in a species?

Mutations in these genes can produce new or altered traits, resulting in heritable differences (genetic variation) between organisms. ... Evolution occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift.

Explanation:

answer

crater lake was formed when mount mazama produced a large eruption and collapsed to form a caldera, which then filled with water forming a lake.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.