In Wisconsin a very large population of lake trout in which individuals mate at random experiences no migration mutations nor selective pressure for a number of years. Which of these is most likely to?

In Wisconsin, a large population of lake trout mating at random and experiencing no migration, mutations, or selective pressure is most likely to exhibit genetic drift over time. This is due to the random changes in allele frequencies that can occur in small populations, leading to potential loss of genetic variation. Additionally, without external influences, the population may become more genetically homogenous, which could impact its long-term adaptability.