Question

Hugo de Vries proposed the mutation theory of organic evolution after his experiments on:

• A. Garden pea
• B. Evening primrose
• C. Fruit fly
• D. Four O’clock plant

Hint:

Mutations are the raw material for evolution, introducing new variations upon which natural selection can act.

Answer 1

The Correct Option is B

Hugo de Vries observed sudden heritable changes (mutations) while working with the evening primrose plant (\textit{Oenothera lamarckiana}). His mutation theory proposed that these sudden changes serve as the basis for evolution, introducing new traits into populations.