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Compare the mechanism of evolution as put forth by Charles Darwin and de Vries.

 

 

 

 
 
 
 
 

Answers (1)

Darwin’s Theory

De Vries Theory

1.The essence of Darwinian theory about evolution is natural selection. Minor variations occurred over a long time which caused evolution.

1.De Vries believed that it is mutation that causes evolution and not the minor variations that Darwin talk about.

2. Darwinian variations are small and directional.

2. de Vries variations were random and directionless.

3. Evolution for Darwin was gradual.

3. de Vries believed that mutation caused speciation and hence called it saltation (single step large mutation)

 

Posted by

Priyanka Kumari

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