Question

Selection in a population subject to rapid changing environments with highly fluctuating food sources is called :

• A. Stabilising selection
• B. k-selection
• C. r-selection
• D. Disruptive selection

Answer 1

Answer: (D)

Disruptive selection

• Since the rapid changing environment has highly fluctuating food resources, the organisms capable of and benefitting from this process will be on either side of the average character, which can utilize extreme sides of food resources, leading to distruptive selection.
  
• It is considered to be the rarest type of natural selection as it is not possible that both the extremes of trait will be equally favoured by the nature during the process of natural selection.
  

So, the correct answer is 'Distruptive selection'