Allopatric Speciation Examples: Cichlid Fishes, Abert and Kaibab Squirrels

Which is an example of allopatric speciation?

apple maggot flies

o Eastern and Western meadowlarks

o Abert and Kaibab squirrels

o cichlid fishes

Answer:

Cichlid fishes and Abert and Kaibab squirrels are examples of allopatric speciation, while Eastern and Western meadowlarks are not. Apple maggot flies undergo sympatric speciation.

An example of allopatric speciation is the cichlid fishes. Cichlid fishes are a group of fish found in various lakes in Africa. One example of allopatric speciation in cichlids is the speciation between the Lake Victoria cichlids and the Lake Malawi cichlids. These two groups of cichlids have undergone divergence due to their geographical isolation in different lakes, leading to the development of distinct species with unique traits and adaptations.

Another example of allopatric speciation can be seen in the case of Abert and Kaibab squirrels. These two squirrel species diverged from a common ancestor due to the formation of the Grand Canyon, which separated their populations. Over time, they have evolved different physical characteristics and behaviors.

Eastern and Western meadowlarks are not an example of allopatric speciation. They exhibit variation in their songs but can still interbreed and produce fertile offspring.

Apple maggot flies, on the other hand, undergo sympatric speciation. They have adapted to two different host plants, hawthorns and apples, leading to reproductive isolation between the two groups. This is an example of ecological speciation within the same geographical area.

Allopatric speciation is a fascinating process that demonstrates the diversity and complexity of evolution. By studying examples like cichlid fishes and Abert and Kaibab squirrels, we gain a deeper understanding of how new species can arise through geographical isolation and genetic divergence.