Question

select the correct answer.
a particular species of fish were split by the formation of the isthmus of panama a long time ago. the fish developed changes in their genes to adapt to the new environment and became two different species. what is this process called?
a allopatric speciation
b sympatric speciation
c gametic isolation
d behavioral isolation
e mechanical isolation

Explanation:

Allopatric speciation occurs when a population is divided by a physical barrier (like the Isthmus of Panama in this case), leading to reproductive isolation and the formation of new species. Sympatric speciation happens without a physical barrier. Behavioral, gametic, and mechanical isolation are types of pre - zygotic barriers that prevent mating or fertilization but do not explain the splitting of the fish population by a physical barrier.

Answer:

A. allopatric speciation