Gene flow
Also quick and easy. Click reset. Note the default settings: A1 allele starts in your population at frequency 0.5, with no immigration from some other source population which also has A1 allele frequency of 0.5. Click run and nothing changes; you did that before – it is just HW.
Now change the fraction of migrants in each generation to 0.1, meaning 10% of your new population each generation will be made up of individuals that came from the other source population. Click run and nothing changes, why?
Recall that what gene flow does is to make populations more similar to each other. If your source population is not different in frequency of A1 allele, then Fst = 0 and the frequency of A1 allele in your population won’t change with migration. So now make migrants come from a population that is genetically different from your population.
Data: fraction of migrants =
A1 freq in source pop =
Click run, what happens?
What is your interpretation?