Question

the formation of the isthmus of panama prevented gene flow between the atlantic ocean and pacific ocean populations of snapping shrimp. this reproductive isolation allowed the populations to diverge enough genetically that they were no longer capable of interbreeding. what is this process called?

○ speciation

○ inbreeding

○ extinction

○ genetic drift

Explanation:

1. Analyze each option:

• Speciation: The process by which new species form. When populations are reproductively isolated (like the snapping shrimp populations separated by the Isthmus of Panama) and diverge genetically until they can't interbreed, this is speciation.
• Inbreeding: Mating between closely related individuals, which is not what's described here.
• Extinction: The disappearance of a species, not the formation of new ones.
• Genetic drift: Random changes in allele frequencies, usually in small populations, not related to geographic isolation leading to new species.

1. Match the process in the question (reproductive isolation, genetic divergence, no interbreeding) to the correct term. The process of new species forming from isolated populations is speciation.

Answer:

A. speciation