Figure 9.1: Huge De Vries Exeriment with Evening Primrose.

 

Important conclusions from Huge De Vries Mutation Theory are given in the Figure 9.2. These are as follows:

1. Mutations are the initiator factor for evolution.

2. Mutants are non-predictable, occur suddenly and produce their effect instantly.

3. No intermediate stage between appearance of mutant form and parent plants.

4. Mutations are commulative in nature and occurs on multiple occasion to increase the frequency of mutant in the population.

5. A single mutation may give rise to new species.

6. At last, environmental factors work as selective pressure to allow growth of benefitial mutants and eliminates lethal or not useful mutations.