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  • (a) How did Darwin explain adaptive radiation by taking an example of finches ? (b) How did Darwin’s view on evolution differ from that of de-Vries ?      </

(a) How did Darwin explain adaptive radiation by taking an example of finches ?

(b) How did Darwin’s view on evolution differ from that of de-Vries ?

 

 

 

 
 
 
 
 

Answers (1)

(a) Drawin conjectured that birds evolved on island itself.

There were seed eating feature and other altered beaks arose allowing different type of food eating habits like insectivorous and vegetarian finches.

This process of evolution of different species is given geographical area starting from a point and radianting to other areas of (geographical) habitat is called adaptive radiation.

(b)

Drawin de Varies
Mirror variation cause evolution. Mutation caused evolution.
Variation are small and directional Mutation are random and directionaless.
Evolution is gradual. Single step large mutation cause speciation.

 

Posted by

Priyanka Kumari

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