If the overall diversity of a population is measured that had gone through a recent bottleneck and then rapidly recovered its former population size, it would have a lower than expected diversity based on its population size.
<h3>What is Population Bottleneck?</h3>
A population bottleneck is a situation where the population is substantially reduced. A variety of occurrences, such as an environmental catastrophe, the extinction-level hunting of a species, or the destruction of an organism's habitat, might result in the bottleneck.
Due to the loss of many alleles, or gene variants, present in the initial population, the population's gene pool decreases as a result of the population bottleneck.
The event has resulted in an extremely low amount of genetic variation in the remaining population, which indicates that the population as a whole has few genetic traits.
When a population bottleneck occurs and there are alleles present, the residual population is more susceptible to genetic drift.
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The climate of a region is determined through the observation of weather patterns over a long time- usually at least 15 years- in a region. Studying climate change would therefore also take very long time as meteorologists attempt to perceive changes in these weather patterns. In this case 30 years can be enough to notice a significant increase in rainfall patterns which can be classified as climate change.
