Question

Why are the traits experiences acquired during the entire lifetime of an individual not inherited in the next generation? Explain the reason of this fact with an example

Answer 1

the traits acquired during thelifetime are not inherited because these traits do not cause any change in gene. Genes have the blueprints of one's basic structure which does not get altered.
for example:
piercing of ears is not inherited in progeny

Answer 2

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Experiences of an individual during its life time are in the somatic cells of the body. That is, in non-reproductive tissues that cannot be passed to the next generation. Thus, they cannot contribute directly in evolution.

For inheritance of traits over generations and involvement in direct evolution, they must be passed to the DNA of the germ cells (reproductive tissues). The characteristics of DNA are passed to the progeny and also can play direct role in evolution.