Q:
      
      
         
            
Lamarck's theory of inheritance of acquired characters was challenged by 
         
       
      
      
      
          
      
      
          Answer & Explanation
         Answer: C) Herbert Spencer         
         
Explanation: August Weismann cut off the tails of mice for 21 successive generations and still they produced generation after generation of only tailed young ones. So he concluded that acquired characters are not inherited.
       
      
      
      
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