if a population experiences no migration is very large has no mutations, has random mating, and there is no selection, what will happen

In this scenario, the population will remain stable and undergo genetic equilibrium. This means that the frequency of alleles and genotypes in the population will remain constant from one generation to the next. The Hardy-Weinberg equilibrium principle can be used to make predictions about the genetic makeup of a population under these conditions. However, any change in the conditions such as migration, mutation, non-random mating, or selection can disrupt this equilibrium and lead to evolutionary changes.