Which phenomenon causes changes in the genotype and phenotype of an organism due to alterations in the $DNA$ sequence?

  • A
    Crossing over
  • B
    Mutation
  • C
    Replication
  • D
    None of these

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Hugo de Vries formulated the "Mutation Theory" based on the experiments he conducted on:

Mutation may result in the:

Mutations are mainly responsible for controlling

Duplication of one or two bases of $DNA$ produces . . . . . . .

Mutation is induced by ...........

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