Populations of field crickets (Teleogryllus oceanicus) native to Australia, but now found on the Hawaiian islands have decreased genetic diversity when compared to source populations. This is a result of

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The decrease in genetic diversity can be attributed to genetic drift, which occurs in small populations and can lead to the random loss of certain alleles over time. Stabilizing selection could potentially maintain genetic diversity, and an increase in genetic diversity within populations would not result in a decrease in overall diversity. Large population sizes are usually associated with greater genetic diversity, so this cannot explain the observed phenomenon. Therefore, D is the best choice.

Populations of Field Crickets (Teleogryllus Oceanicus) Native to Australia, but Now