The answers are;
- No mutations occur
- There can be no migration in and out of the population
- The population must be infinitely large
- There must be random mating and all members of the population must breed.
These are called the exception to the Hardy Weinberg's principles of a population in equilibrium. However, while these are assumptions of an ideal population, it is a rare occurrence that these assumptions are maintained because the population and the environment they live in are very dynamic.
