Speciation
Parapatric speciation is when a new species is able to evolve, even though the groups share a common border, they are still in a spatially segregated environment.
The species will still maintain a zone of contact, this zone of contact allows the exchange of genes between the two groups to occur at the specific border region known as the hybrid zone where hybridization occurs.
This process is a cross between continual gene flow, and strong natural selection. Gene flow is the process in which is the transfer of genetic material from one population to another, if it is high enough the gene flow can effectively create one single population. However, this only occurs in the hybrid zone thus you will have two distinct populations outside the hybrid zone and a hybridized population within this zone.
The species will still maintain a zone of contact, this zone of contact allows the exchange of genes between the two groups to occur at the specific border region known as the hybrid zone where hybridization occurs.
This process is a cross between continual gene flow, and strong natural selection. Gene flow is the process in which is the transfer of genetic material from one population to another, if it is high enough the gene flow can effectively create one single population. However, this only occurs in the hybrid zone thus you will have two distinct populations outside the hybrid zone and a hybridized population within this zone.