What are the 4 stages of Speciation

1 - Isolation - Geographic, Behavioural, Ecological 2 - Mutations - occur in both populations, mutations are needed to create new alleles in each of the populations 3 - Natural Selection - Occurs whenever a mutation gives members of the subpopulation a selective advantage 4 - Over Time - The gene pool of each population changes. The 2 populations are 2 different species