which of the following is an example of gene flow
This is an emerging area of study, developing from Mendelian genetics through to the modern science, which can now accurately track genetic histories of populations. Examples of Gene Flow: Genetic heritage mapping
This is due to the fact that, in symaptric speciation, gene flow within a population is unrestricted; whereas in parapatric speciation, gene flow is limited—thus allowing reproductive isolation to evolve easier.