The question refers to the following description. On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated, freshwater ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit exclusive breeding preferences. Which two of the following have operated to increase divergence between mosquitofish populations on Andros?1. improved gene flow2. bottleneck effect3. sexual selection4. founder effect5. natural selectionA. 3 and 4B. 2 and 4C. 2 and 3D. 1 and 3E. 3 and 5

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Biology

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29 May, 02:07

The question refers to the following description. On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated, freshwater ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit exclusive breeding preferences. Which two of the following have operated to increase divergence between mosquitofish populations on Andros?1. improved gene flow2. bottleneck effect3. sexual selection4. founder effect5. natural selectionA. 3 and 4B. 2 and 4C. 2 and 3D. 1 and 3E. 3 and 5

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Mathew Hester · Answer 1

Sexual selection and natural selection

Explanation:

The mosquitofish population living in ponds with predators swim in fast bursts to protect themselves from the predators. The other population of mosquitofish living in a pond with a few predators swims continuously. This is an example of natural selection. The mosquitofish that can swim in fast bursts are favored in predator rich ponds due to their survival success over the ones that swim continuously.

Breeding preferences as exhibited by females of the two populations of mosquitofish represent the sexual selection. These females prefer the mate according to some advantageous features.