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Alexeev081 [22]
3 years ago
7

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? improved gene flow bottleneck effect sexual selection founder effect natural selection
Biology
1 answer:
makkiz [27]3 years ago
8 0

Answer:

sexual selection

natural selection

Explanation:

Natural selection is an evolutionary mechanism (changes the allele frequency) by favouring traits that are advantageous among others because they increase the survival and reproduction. In the example above, mosquitofish that live in the predator-rich ponds devoloped a trait that help them survive (swimming in short, fast bursts). This adaptation to environment is favourable by natural selection.

Sexual selection refers to the female mosquitofish and the fact that they choose their males (with better reproductive success).

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