Q.Write the objections to the Mutation theory of Hugo de Vries.
You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.
Start your 14-day free trial to unlock the full solution →The large discontinuous variations de Vries observed were actually chromosomal aberrations, not true gene mutations. The rate of true gene mutation is too low to account for the pace of evolution. Chromosomal aberrati...
Step 1. The first objection is that the large, discontinuous variations Hugo de Vries actually observed in Oenothera lamarckiana were later shown to have arisen from chromosomal aberrations, not from true gene mutations — ordinary gene mutations typically cause only minor phenotypic changes, unlike the dramatic jumps de Vries described.
Step 2. The second objection is that the actual rate of true gene mutation occurring in nature is far too low, on its own, to account for the pace of evolutionary change that is observed. …
Unlock everything free for 14 days
- Full step-by-step solutions
- Concept-first explanations
- Methods, shortcuts & mistakes
- PYQ mapping + timed mock tests
Full access for 14 days. No credit card required.