Q. de Vries gave his mutation theory on organic evolution while working on :
A) Althea rosea
B) Drosophila melanogaster
C) Oenothera lamarckiana
D) Pisum sativum
Explanation
[Solution from source] Hugo de Vries based his mutation theory on sudden large variations he saw in the evening primrose, Oenothera lamarckiana. Drosophila was Morgan's organism and Pisum sativum was Mendel's. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.