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Solution


Q.

Variations caused by mutation, as proposed by Hugo de Vries, are                [2019]
1 small and directionless  
2 random and directional  
3 random and directionless  
4 small and directional  

Ans.

(3)

Hugo de Vries (1901) put forward the theory of evolution called mutation theory. He believed that mutation causes evolution. Mutations are discontinuous variations that are random and directionless.