Problem
According to the mathematical model of Kimura & Ohta (Genetics 61, 763-771 (1969)) for genetic drift which populations is most likely to be the last to see the complete loss of genetic diversity at a given gene loci (where we assume there are only 2 alleles "A" & "a", no immigration or emigration, the population size remains constant, mating is random, there are no new mutation, and no selection)