Although North and South America are currently connected by a strip of land know

Question

Although North and South America are currently connected by a strip of land known as the Isthmus of Panama, they wereseparated until about 3 million years ago. Until that separation, aquatic populations living in this area had ample opportunity to intermingle, and there was gene flow between them However, after the two continents became connected, these populations gradually became separated. Some populations were separated earlier than others. The populations farther away from the final open connection diverged first, while thosecloser to the final connection diverged recently. Based on the genetic divergence of each of these paired populations (one in the Pacific and one in the Atlantic), rank them in order from the first todiverge to the last to diverge. Species Pair Species A and F Species B and G Species C and H Species D and I Species E and J % Genetic Divergence 87 98 91 63 75 Question List (5 items) Drag and drop into the appropriate area) Correct Answer List First to Diverge and I and H and G and J 2 and F 3 4 5 Last to Diverge

Explanation / Answer

First to diverge-

1. Species D and I- 63%

2. Species E and J - 75 %

3. Species A and F - 87 %

4. Species C and H - 91 %

5. Species B and G - 98 %

Last to diverge

Species B and G are last to diverge because they evolving and not stabilized, hence have a higher number of genetic variations.

Species D and I are first to diverge because they are stabilized and undergo fewer variations. Hence less genetic variations.

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