contestada

A pine forest covers a valley, and one of the inhabitants is a fox species. After days of rain, a river forms and separates the valley with a river that the foxes cannot cross, thus producing two isolated populations of foxes. What change needs to occur for the two populations of foxes to become separate species?

Respuesta :

The correct answer is: Reprodutive Isolation.

Explanation:

  • According to the question, the formation of a river in their habitat separates the foxes into two populations which are unable to come into contact with each other.
  • Gradually with the passage of time,each of the populations of foxes develop mutations which make them more adaptable to the different environments they are exposed to.
  • This eventually results in the development of a reproductive barrier in between the two populations.
  • Reproductive isolation can be defined as the evolutionary phenomenon due to which individuals belonging to two different species are incapable of reproducing or mating and producing viable and fertile offspring.
  • Reproductive isolation results into the formation of  new species.
  • In the given question, the two populations of foxes gradually undergoes divergent evolution to form two different species.

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