What evolutionary mechanism is affected by random chance or natural disasters?Group of answer choicesSpeciation eventMigrationNatural selectionGenetic Drift
Question
What evolutionary mechanism is affected by random chance or natural disasters?Group of answer choicesSpeciation eventMigrationNatural selectionGenetic Drift
Solution
The evolutionary mechanism that is affected by random chance or natural disasters is Genetic Drift. This process causes random changes in the frequencies of traits in a population. It is most powerful in small populations where a single individual's traits can have a major impact. Natural disasters such as floods, fires, or storms can drastically reduce the size of a population, leading to a small population that may not be representative of the original one. This is known as a bottleneck effect.
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