Question

a population of chimpanzees was separated when the forest that they lived in had a section cut down and a town was built. after a long period of time, the chimpanzees came back into contact but were incapable of breeding. which of the following best describes the process that occurred?
○ adaptation
○ speciation
○ convergent selection
○ stabilizing selection

Explanation:

1. Analyze each option:

• Adaptation: Refers to organisms adjusting to their environment, not about becoming reproductively isolated. Eliminate.
• Speciation: The process by which new species form, often due to geographic isolation (allopatric speciation here, as the chimps were separated by a town/forest cut). After isolation, genetic differences accumulate, leading to reproductive isolation (can't breed), which matches the scenario.
• Convergent selection: Involves unrelated species evolving similar traits, not relevant here. Eliminate.
• Stabilizing selection: A type of natural selection favoring intermediate traits, not about speciation. Eliminate.

Answer:

B. speciation