Why is variation beneficial to the species but not necessarily for the individual?



  • Variation refers to the slight changes in DNA which alter the body design of an organism.
  • These are introduced during reproduction
  • Variations are important to ensure survival of species in unfavorable and adverse environments.
  • Since the surroundings are constantly changing , it is necessary that the individuals change according to their surroundings. This is possible because of variations.
  • For example, if there are some drastic changes like excessive heat or cold etc. and all the individuals of a species are exactly identical , then this will lead to complete elimination of the species. However, if there is a variation in some of the individuals, then these will grow in number hence maintaining the species .
  • Variation during reproduction is an inbuilt tendency and it lays a pathway for evolution.




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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo