Question

Hugo de Vries proposed ‘Mutation theory’ by studying the plant ______________.

• A. Mirabilis jalapa
• B. Antirrhinum majus
• C. Pisum sativum
• D. Oenothera lamarckiana

Hint:

Hugo de Vries is associated with Mutation Theory, not Mendelian genetics.

Answer 1

The Correct Option is D

Step 1: Understanding mutation theory.
Mutation theory states that evolution occurs due to sudden, discontinuous variations called mutations.
Step 2: Work of Hugo de Vries.
Hugo de Vries studied evening primrose and observed sudden heritable changes appearing in successive generations.
Step 3: Identification of the plant.
The plant used in his experiments was {Oenothera lamarckiana}.
Step 4: Conclusion.
Hence, mutation theory was proposed based on studies of Oenothera lamarckiana.