Which type of speciation occurs at the edges of the parent population?
Sympatric speciation
Allopatric speciation
Peripatric speciation
Parapatric speciation
Parapatric speciation happens when a species population enters a new place. Parapatric speciation takes place at the edges of the parent population.
Hence option 1, 2 and 3 does not take place at the edge of the parent population
Hence, option 4 is the correct answer.