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Why are traits acquired during the life-time of an individual not inherited?



  • Acquired traits do not have any genetic change occurring: there is no change in the reproductive cells , change is only in the non-reproductive cells.
  • Thus these traits are not passed on from one generation to another.
  • For Example -
  • Reduction in weight is an acquired trait .
  • Due to environmental stress (availability of less food), the weight of beetles is reduced.
  • Once conditions became normal again, the initial weight was restored .
  • There is no characteristic evolution in this case.

To inherit a trait, 

  • A genetic change would have to be carried from one generation to another due to genetic drift or natural selection. That cannot happen during a single lifetime .

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Maninder Singh

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