A person flies from one continent to another. Unknowingly, he boards the plane with a few seeds attached to the laces of his hiking boots. As he is hiking at his destination, these seeds drop off and become planted. The seeds grow and interbreed with a closely-related native species also found at that location. After a few generations, the population where the seeds dropped have flowers with different shapes compared to the surrounding populations in the forest.

This is an example of...

A. gene flow.

B. genetic drift.

C. sexual selection.

D. disruptive selection.

1 answer

A. gene flow.