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10th Class Science Heredity and Evolution Question Bank Heredity and Evolution

  • question_answer
    A sudden irreversible change that takes place in the genotype of an organism is called.

    A) Evolution                           

    B) Mutation                           

    C) Melanism                          

    D) Natural selection 

    Correct Answer: B

    Solution :

    Mutation is a sudden change that takes place in either the whole chromosome or a gene. It cannot be reversed. It can be caused by factors such as radiation and exposure to certain chemicals.


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