Question

which outcome can occur to two segments of a population if they are geographically isolated?
○ both groups most likely become extinct.
○ they find a way to come back together.
○ they can only share some types of genes.
○ eventually, they become separate species.

Explanation:

When two segments of a population are geographically isolated, over time, they may experience different environmental pressures, mutations, and genetic drifts. This can lead to reproductive isolation, where they can no longer interbreed. According to the biological species concept, if two groups cannot interbreed and produce fertile offspring, they are considered separate species.

• Option 1: There is no indication that both groups will become extinct just because of geographical isolation.
• Option 2: The question is about what "can occur" if they remain geographically isolated. Finding a way back together is not the focus of the isolation scenario.
• Option 3: Geographical isolation restricts gene - flow. They cannot easily share genes (except in some rare cases like long - distance pollen or seed dispersal for plants, but this is not the norm for most populations).
• Option 4: Over time, due to the lack of gene - flow and different evolutionary forces acting on each isolated group, they can evolve into separate species.

Answer:

Eventually, they become separate species.