The post bottleneck population exhibits less genetic variation than the pre bottleneck population.
Answer: Option A
Step-by-step explanation:
To be precise the bottle neck population is a stage where a particular species undergo dramatic reduction in their population size. It may be due to natural or human activity. Whatever reason might be there are some species that fight to thrive to exist among all odds.
Hence they undergo certain genetic variation to withstand the declining rate. Low genetic variation is only exhibited in this population so that they do not become a prey for the deleterious effect caused in the environmental changes.