Which of the following could be a vicariance event for species in that habitat?
A)The level of water in a lake recedes,creating two lakes where there used to be one.
B)Some insects get blown in a storm to a new mountain range,where they lay eggs.
C)Radiation near Chernobyl increases mutation rate,causing an increase in autopolypolidy.
D)All of the above could be vicariance events for species in that habitat.

Question

Quizplus · Accepted Answer

Vicariance events are usually associated with physical barriers that separate a once continuous population. In this scenario, the separation of a single lake into two separate lakes due to receding waters can create a physical barrier that separates the species living in that habitat.

Option B describes a scenario where species are dispersed, which is not a vicariance event. Option C describes a scenario of mutation, rather than physical separation, which is also not a vicariance event. Therefore, A is the best choice for a vicariance event.

Which of the Following Could Be a Vicariance Event for Species