What effects would el niño most likely have on organisms

El Niño would cause changes in the genetic makeup of organisms.

The floods of an El Nino might wipe out a large proportion of a population. This, therefore, wipes out a large proportion of alleles from the population. If the population was very small, there will be a dramatic shift in allele frequency since the small population left will have the responsibility of repopulating. This is called the bottleneck eff

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