Hugo de Vries theory:
This theory is based on mutations.
Mutations cause evolution.
Mutations are random and directionless.
Sudden mutations cause evolution.
Variations caused by mutation, as proposed by Hugo de Vries, are:
NEET UG 2019 — Zoology Evolution
2019mcqeasy
Variations caused by mutation, as proposed by Hugo de Vries, are:
Official previous-year question
Held on 30 Apr 2019 · Verified 9 Jul 2026.
Options
- A
Random and directional
- B
Random and directionless
- C
Small and directional
- D
Small and directionless
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