A population of animals is permanently split by a natural barrier into two separate populations in different environments. what will likely result after a long period of time? *

When a population of animals is permanently split by a natural barrier into two separate populations in different environments, a process known as allopatric speciation may occur over a long period of time. Allopatric speciation refers to the formation of new species due to geographical isolation.

Over time, the two separated populations may experience different environmental conditions, selective pressures, and genetic changes. The following outcomes are possible:

1.Genetic Divergence: The populations may accumulate genetic differences over time due to mutation, genetic drift, and natural selection. The different environments can lead to the selection of traits that are advantageous in each specific habitat.

2.Adaptation to Local Environments: Each population may evolve adaptations that are beneficial for survival and reproduction in their respective environments. These adaptations can include changes in behavior, physiology, or morphology.

3.Reproductive Isolation: As genetic differences accumulate, reproductive barriers may develop between the two populations. This can result in a reduced ability to interbreed, leading to reproductive isolation.

4.Formation of New Species: If reproductive isolation becomes complete, the two populations may eventually be considered distinct species. This means that even if the natural barrier is removed, and the two populations come into contact again, they may not interbreed successfully.

In summary, the likely result after a long period of time following the permanent split of a population by a natural barrier is the possibility of allopatric speciation, where distinct species may emerge due to the evolutionary processes acting on the separated populations in different environments.