2. In ring species, geographically close populations are genetically compatible

Question

2. In ring species, geographically close populations are genetically compatible and can mate with each other, hut geographically distant populations are incompatible. In the example below each population is compatible with populations that have an assigned number whose difference is only one away. For example. in the diagram below population #2 ?s compatible with #3 and #1, but not #4 and #5. a. Given what you know about population structure and speciation what would you predict about the dispersal of individuals within each population?

Explanation / Answer

consider that #1 is a species that was initially present. it moves across a geographical location in a straight line. as it moves across the location,it will evolve continously. This population reaches a point where it will evolve to form #5 species. Now, imagine this straight movement across the geographic location to bend in order to form a ring, such that #1 meets #5 are present in the same location. However, these two species will be so evolutionarily distinct from each other that they cannot interbreed.   but, the #1 and #2 which are closely related they can interbreed. thus, explains the disperal pattern of species across the geographical location in a ring pattern.

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