Respuesta :
Answer: Gene flow
Explanation: Allopatric speciation is the situation of the occurrence of the barrier in the geographic region. Due to this factor the isolation of the population takes place. For the prevention of the allopatric speciation,gene flow stops that process . In this the gene flow is the flow of genes between the interbreeding population of a specific species. So speciation occurs only when there is no gene flow and effects the population.
The study of a living being is called biology, There are two types of living beings and these are plants and animals.
The correct answer to the question is option B which is gene flow.
What is speciation?
The formation of new species from the old one is called speciation.
According to the question, Allopatric speciation is the situation of the occurrence of the barrier in the geographic region. Due to this factor, the isolation of the population takes place. For the prevention of allopatric speciation, gene flow stops that process.
In this, the gene flow is the flow of genes between the interbreeding population of a specific species. So speciation occurs only when there is no gene flow and affects the population.
Hence, the correct answer is option B.
For more information about the genes, refer to the link:-
https://brainly.com/question/1388366
