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Solve! According to Hugo de Vries , the mechanism of evolution is

According to Hugo de Vries , the mechanism of evolution is

  • Option 1)

    Phenotypic variations

  • Option 2)

    Saltation

  • Option 3)

    Multiple step mutations

  • Option 4)

    Minor mutations

 
Answers (2)
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N neha

As we learnt in

Discontinuous Distribution -

Descendants of a common ancestor in some cases inhabit different continents and also differ from each other. 

- wherein

This is called Discontinuous Distribution.

Eg., aligators and mangolias, tulip and sassafras

 

As per mutation theory given by Hugo de Vries, the evolution is a discontinuous phenomenon or saltatory phenomenon/saltation.

 


Option 1)

Phenotypic variations

This is incorrect.

Option 2)

Saltation

This is correct.

Option 3)

Multiple step mutations

This is incorrect.

Option 4)

Minor mutations

This is incorrect.

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