All of the above factors contribute to reducing the gene pool of small populations compared to larger populations. Inbreeding can lead to an increase in harmful recessive traits, while a lack of advantageous traits can limit the ability of the population to adapt to changing environments. Additionally, a lack of suitable mates can reduce genetic diversity, and bottleneck events, such as natural disasters or human activities, can drastically reduce the number of individuals in a population, further limiting genetic variation.
